Comic Title: Superboy #126
Publisher: DC (National Periodical Publications, Inc.)
Address: 575 Lexington Avenue, New York, NY
Cover Date: January 1966
On Sale Date: November 18, 1965 Copyright Date November 18, 1965
Source: Library of Congress, Periodicals 1965

Frequency: Monthly, with the exception of Feb, Aug., and Nov.
Cover Price: $0.12
Page Count: 32
Editor: Mort Weisinger

Title: "Krypto's Family Tree"
Pages: 9

Feature(s):
Superboy (of Earth-1)

Writer: Otto Binder
Penciller: Curt Swan
Inker: George Klein

Feature Character(s)

• Superboy (last appearance in Superboy #126; next appearance in Adventure Comics #340)

Supporting Character(s)

• Krypto (last appearance in Superboy #125; next appearance in Superboy #128)
• Jor-El (in flashback; last appearance in Action Comics #329; next appearance in Superboy #140)
• Lara (in flashback; last appearance in Superman's Girl Friend, Lois Lane #59; no further appearances)

Villain(s)

• Two aliens and two criminals (appear in flashback; no further appearances)

Other Character(s)

• Zypto, Zak-Zil, and Valla (Krypto's father, a scientist, and Zypto's owner; appear in flashback; no further appearances)
• Valla's father (appears in flashback; no further appearances)
• Nypto and Dik-Ki (Krypto's grandfather and his owner; appear in flashback; no further appearances)
• Vypto (Krypto's great-grandfather; no further appearances)
• Vypto's owner (appears in flashback; no further appearances)

Flashback Appearance(s)

• Kal-El (as a baby on Krypton; last appearance in Action Comics #329; next appearance in Superboy #130)
• Krypto (last appearance in Action Comics #325; next appearance in Superboy #130)

Synopsis:
When Krypto panics at the sight of a tiny insect, Superboy uses a machine to retrieve Krypto's buried memories to find the source of his fear. Superboy and Krypto view a memory in which Jor-El recounts tales of Krypto's ancestors. Krypto's father Zypto, Nypto his grandfather, and Vypto his great-grandfather were all heroes in their own day. Vypto however saw a picture created by his artist owner of a frightening creature. Jor-El had shown the picture to young Krypto, who was equally frightened. The insect which frightened Krypto earlier resembled the creature and triggered the fear response.