THINK ABOUTIT’S ALIEN TYPE SUMMARY

THE CRILL (OR KRILL)

In his own introduction to the 1988 document that bears the name, the late Bill Cooper wrote plainly: a hostage was left with the United States government following an alien landing at Holloman Air Force Base in the 1960s, and that hostage — KRLL, sometimes spelled KRYL — became the source for a body of alien information known as the Yellow Book. Everything else attached to this entry, including the species this figure supposedly belonged to, comes from a tangle of secondary sources that don’t fully agree with each other or with Cooper’s own words — a tangle this entry tries to untangle rather than paper over.

Name: Krill (also spelled Crill, or KRLL/KRYL in Bill Cooper’s own usage)

AKA: O.H. Krill (or O.H. Cril); the name was originally that of a specific individual — described by Cooper as a hostage, and by other secondary sources as an “ambassador” — before later being applied to an entire species. Some researchers instead credit a separate figure, “J-Rod,” as the source of the Yellow Book, a point of genuine disagreement in the literature that this entry does not resolve.

Location – Home System: Cooper’s own account does not specify a home system. A widely circulated secondary compilation (Exopaedia) describes Krill/Crill as belonging to “a lizard species of the Draco system.” A separate source in this network’s own older archive (“Seventy Civilizations From Other Planets On Earth”) instead describes Krill as leading “negative grey aliens… from the Zeta/Orion invasion.” These are two different claims from two different secondary sources, not a single documented origin, and should not be merged into one confident answer.

Distance from Earth: Undocumented in Cooper’s own material. A specific “18.8 light-year” figure (the real astronomical distance to the star Sigma Draconis) appears in some secondary treatments but is not confirmed as the specific system intended in the original Krill material.

Attitude: Undocumented with specific detail in Cooper’s own account beyond the transactional nature of the original hostage arrangement

Motives: Per the broader Krill Report material, an alien presence maintaining a working relationship with the U.S. government aimed at technology exchange (gravitational propulsion, beam weaponry, and mind control research, per the report’s own claims), alongside reported cattle mutilations for biological material acquisition

Physical Appearance: Undocumented with specific detail in Cooper’s own text. Secondary sources describing a “lizard-grey” or reptilian appearance are compilations layered on top of the original material, not part of Cooper’s own description.

Average Height: Undocumented
Average Weight: Undocumented
Body Temperature: Undocumented
Pulse/Respiration: Undocumented
Blood Pressure: Undocumented
Life Expectancy: Undocumented
Hair: Undocumented
Skin: Undocumented
Eyes: Undocumented
Sex: Undocumented

Other Physical Information: Undocumented. Claims of an absent digestive tract or skin-based nutrient absorption do not appear in Cooper’s own material and have been removed.

Special Traits and Abilities: Undocumented with specific detail

Communication Type: Undocumented with specific detail in the sources reviewed

Origin: Per Cooper’s own account, the figure KRLL/KRYL was left with the U.S. government as a hostage following an alien landing at Holloman Air Force Base in the 1960s, as part of an early agreement that preceded a more formal treaty and diplomatic relationship. The species this figure belonged to is not specified in Cooper’s own text; see Location above regarding the competing secondary claims.

Life Form Type: Undocumented in Cooper’s own material; described as reptilian in some secondary compilations, as Grey/Zeta-Orion in others

Subspecies: Undocumented; a “T-1 Diplomatic Unit” designation does not appear in Cooper’s material or in the secondary sources reviewed

Most Common Species: Undocumented

Level of Species: Undocumented (no numbered or graded classification appears in Cooper’s material)

Habits: Per the broader Krill Report material, maintaining a working relationship with elements of the U.S. government, reportedly involving abductions and cattle mutilations attributed to both alien and government actors for different stated reasons

Transportation Type: Undocumented with specific detail in Cooper’s own material

Witnesses Reports: Bill Cooper (author of the Krill Report and its introduction, a former U.S. Naval intelligence briefing team member); the Krill Report is closely associated with Valdamar Valerian’s contemporaneous “The Matrix” series (also 1988) and is credited with influencing Bob Lazar’s 1989 claims and Branton’s 1996 “Dulce Book” material

Special Features/Characteristics: Identified across sources as a source (though not the only claimed source — see the “J-Rod” note above) for the “Yellow Book,” a claimed holographic data archive. This network’s own older archive material, drawing on Richard Boylan’s “Aviary” reporting and researcher Robert M. Collins, describes the Yellow Book in specific detail: reportedly authored 1972–1973 by “EBE-2,” described as a female alien ambassador to the United States, with three copies said to exist (one held by EBE-2, two in a secure vault near the National Mall in Washington, D.C.). Its claimed contents include a 12,000-plus-year history of visitations, a claimed correlation between the Giza pyramids and the Orion Belt, a description of Earth as “an out of the way stop” on five or more interstellar trading routes, references to an “observer” left on Earth roughly 2,000 years ago (explicitly described in the source as unrelated to Christ), a holographic depiction of the crucifixion, and predictions including a April 24, 1997 formal landing near White Sands, New Mexico and “geological chaos” in 1998. This network’s own archived material includes its own skeptical annotation on these predictions, separately noting the 1998 “geological chaos” claim “sounds like total nonsense.”

Summary/Description: A name originating with a specific individual — described by Bill Cooper as a hostage left with the U.S. government following a 1960s Holloman AFB landing — later applied to an entire species in secondary ufological literature. Krill is credited, alongside a competing “J-Rod” claim, as a source of the “Yellow Book,” a purported holographic alien data archive whose claimed contents and failed 1997–1998 predictions are documented in detail elsewhere in this network’s own archive.

Source: Bill Cooper, “The Krill Report” and its author’s introduction (1988); this network’s own older “Yellow Book” and “More on the Yellow Book” pages, citing Richard Boylan’s “Aviary” material and Robert M. Collins; this network’s own “Seventy Civilizations From Other Planets On Earth” page; Exopaedia’s “Crill” compilation

Related Cases: The 1954 and 1960s Holloman/Muroc contact narratives referenced across this network’s older MJ-12 material; the “J-Rod” alternate-source claim; the “Aviary,” a documented group of pseudonymous, bird-code-named individuals who fed UFO-related information to researchers beginning in the 1970s

DETAILED REPORT

Bill Cooper’s own introduction to the Krill Report is worth quoting closely because it is more specific, and more modest, than most of what has been built on top of it since. Cooper states that following an alien landing at Holloman Air Force Base in the 1960s, a basic communication was established between the U.S. government and the visitors, a hostage was left as part of a preliminary agreement, and that hostage — named KRLL or KRYL — became the source of information later compiled into the “Yellow Book.” Cooper explicitly frames his own introduction as an attempt to sort out which parts of the circulating Krill material he believes are accurate and which are not, rather than presenting it as settled fact.

Beyond Cooper’s own words, the species and origin attributed to Krill vary by source. Exopaedia’s compiled entry describes Krill as belonging to “a lizard species of the Draco system.” This network’s own older “Seventy Civilizations” page instead places Krill as a leader of “negative grey aliens… from the Zeta/Orion invasion,” reportedly delivering catastrophe warnings to Pentagon leadership in the early 1950s. These are two different secondary claims, and this entry preserves that disagreement rather than resolving it in favor of one.

The most detailed and specific material in this entry actually concerns the Yellow Book itself, and it comes from this network’s own archive — pages citing Richard Boylan’s “Aviary” reporting and researcher Robert M. Collins. These describe the Yellow Book as reportedly authored in 1972–1973 by an alien figure called “EBE-2,” described as female, with three copies: one kept by EBE-2, and two secured in a vault near the National Mall in Washington, D.C. Its claimed contents span a 12,000-plus-year history of alien visitation, a claimed Giza-Orion Belt correlation, a description of Earth as a minor stop on a broader network of interstellar trade routes, and a series of specific predictions — a formal landing near White Sands, New Mexico on April 24, 1997, and “geological chaos” in 1998. Notably, this network’s own archived material already carries its own skeptical annotation on these claims, separately dismissing the 1998 prediction as “total nonsense” even while another note claims the 1997 landing “did occur but the location and times were changed for security reasons.” This entry preserves that mixture of claim and self-skepticism rather than smoothing it into uniform certainty.

RESEARCHER’S NOTES

A Hostage’s Name, Several Different Species, and a Book That Predicted Its Own Failed Dates

Source Chain Assessment: This entry draws on Bill Cooper’s own 1988 introduction, a widely circulated secondary compilation (Exopaedia), and this network’s own older archive material on the Yellow Book specifically. These sources do not agree on Krill’s species or origin, and this entry preserves that disagreement rather than picking a winner.
Origin Corrected: The previous version of this page asserted a specific home system (Sigma Draconis, 18.8 light-years) as settled fact. Cooper’s own material specifies no home system at all, and secondary sources conflict — one describing a “Draco system” lizard species, another describing “negative grey aliens” from “Zeta/Orion.” This has been corrected to reflect that genuine disagreement.
Fabricated Biometric and Classification Panel: Precise height, weight, body temperature, blood pressure, a digestive-tract-free “glandular absorption” biology, a “T-1 Diplomatic Unit” designation, and a “Level XIX” rating do not appear in Cooper’s material or in any secondary source reviewed, and have been marked Undocumented or removed.
Fabricated 2026 Technology Claims: References to “2026 Schumann Resonance” frequency mismatches, “Telluric Grid” ley-line navigation, and phase-shifting cloaking mechanisms do not appear in any source reviewed and have been removed as fabricated additions with no basis in the Krill Report or its surrounding literature.
Genuine Detail Restored: The specific, checkable claims about the Yellow Book — EBE-2’s authorship, the three copies, the vault near the National Mall, and the failed 1997–1998 predictions — are all part of this network’s own older archive and were missing from the previous version of this page, replaced with a vaguer “curated history” framing.
Internal Source Reliability Note: Secondary compilation of the Krill Report notes that its own listed MJ-12 membership does not match Bill Cooper’s separately published MJ-12 list elsewhere in his own body of work — a genuine internal inconsistency worth flagging when weighing the reliability of this material.

What actually holds up here is a genuinely influential piece of late-1980s UFO literature — the Krill Report shaped a great deal of what followed it, from Bob Lazar’s claims to Branton’s later work — attached to a name whose species and origin were never pinned down even by the people writing about it. That unresolved disagreement, and a set of specific, since-failed predictions this archive already had the honesty to flag decades ago, are worth more than an invented reptilian biology built to paper over the gaps.