"Buster's cousin (That's a Baby Show!)" is not an official name.
Buster's cousin (That's a Baby Show!)
Family Buster Baxter (cousin)
Bitzi Baxter (aunt?)
Bo Baxter (uncle?)
Stu (unknown family relationship)
Buster's grandmother (unknown family relationship)
Bitzi's father (unknown family relationship)
Buster's aunt (possibly mother)
Cartoon debut "That's a Baby Show!" (mentioned only)

Buster once missed an episode of The Dark Bunny because his baby cousin was watching The Love Ducks.

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