Comic Title: Doom Patrol #100
Publisher: DC (National Periodical Publications, Inc.)
Address: 575 Lexington Avenue, New York, NY
Cover Date: December 1965
On Sale Date: October 21, 1965 Copyright Date October 21, 1965
Source: Library of Congress, Periodicals 1965

Frequency: Monthly, with the exception of Jan., April, July and Oct.
Cover Price: $0.12
Page Count: 32
Editor: Murray Boltinoff

Title: "The Fantastic Origin of Beast-Boy"
Pages: 16

Feature(s):
Doom Patrol (of Earth-1)

Writer: Arnold Drake
Artist: Bruno Premiani

Reprinted In:
Doom Patrol Archives Vol. 3 HC (2006)
Showcase Presents the Doom Patrol Vol. 1 TPB (2009)
Doom Patrol:The Silver Age Omnibus HC (2017)
Doom Patrol:The Silver Age Vol. 2 TPB (2020)

Feature Character(s)

• Doom Patrol (last appearance in Doom Patrol #99; next appearance in Doom Patrol #101)
• Chief (last appearance in Doom Patrol #99; next appearance in Doom Patrol #101)
• Robotman (last appearance in Doom Patrol #99; next appearance in Doom Patrol #101)
• Elasti-Girl (last appearance in Doom Patrol #99; next appearance in Doom Patrol #101)
• Negative Man (last appearance in Doom Patrol #99; next appearance in Doom Patrol #101)

Supporting Character(s)

• Beast Boy (last appearance in Doom Patrol #99; next appearance in Doom Patrol #101)

Villain(s)

• Nicholas Galtry (Gar Logan's guardian; first name not revealed in this story; first appearance; last appearance in Doom Patrol #115; next appearance in Doom Patrol #101)
• Dr. Weir and Mr. Durling (a criminal scientist and his assistant; the two revealed to be one and the same in this story; no further appearances)

Other Character(s)

• Hank and Mr. Boujier (a security guard and a diamond exchange executive; no further appearances)
• A police captain (no further appearances)
• Dr. Mark Logan (Gar Logan's father; dies in flashback; first appearance; last appearance in Doom Patrol #112; no further appearances)
• Marie Logan (Gar Logan's mother; dies in flashback; first appearance; last appearance in Doom Patrol #112; no further appearances)

Flashback Appearance(s)

• Beast Boy (earliest chonological appearance; next appearance in Doom Patrol #112)

Comments:
Part 2: "The Origin of Beast-Boy"

Beast Boy is mistakenly called "Craig" throughout this story. He adopts Doom Patrol uniform and face-mask as of this story, thus keeping secret identity as Gar Logan. The color of face-mask changes in subsequent stories.

Synopsis:
While Beast Boy continues to petition for permanent membership in the Doom Patrol, his unscrupulous guardian, Nicholas Galtry, volunteers Gar Logan's services to a mysterious Dr. Weir. Meanwhile, the police ask the aid of the Doom Patrol in dealing with marauding prehistoric creatures which have invaded the city. Suspecting the agency behind the fantastic threat, Beast Boy reveals his origin to the Chief.

The child of a genius medical researcher working in the African jungle, the young Gar had contracted a rare disease and was cured when his father used an experimental process to transform him temporarily into a species of green monkey capable of resisting the illness. Upon his recovery, he retained his green pigmentation and gained the ability to take on any animal form. Shortly afterwards, his parents drowned and he was unable to save them.

Now Gar carries the secret of his father's reverse-evolution process in a capsule around his neck as part of his inheritance to be attained when he comes of age, and it is this secret that Dr. Weir has stolen and used to unleash the dinosaur menace on the city. Armed with this information, the Doom Patrol and Beast Boy are able to defeat the dinosaurs and capture Weir.