Kearney Zzyzwicz, Jr.

Kearney Zzyzwicz, Jr. is the son of Kearney and Kearney's unseen ex-wife. It is found out he overcame his parents' divorce by sleeping in a drawer at night. He also was seen sitting on Gil's lap when Gil was dressed as Santa Claus. Kearney, Jr. may also have a younger brother since a baby Kearney goes to the small sandbox next to Moe's and he bullies Maggie, along other babies.

Non-canon
Kearney's unlock message mentions Kearney, Jr., but his name is "Jason" in the message. He is also mentioned in some dialogue, where he is said to be around Bart's age.