- Bob's last name is revealed in Beast Halloween Ever, where Mikey says "Off to the Penskis' house!"
- The episode "Happy Beastgiving" reveals that Ken lives in the same house with Bob.
- However, they are not brothers because in the episode "Mikey Is a Beast", Bob said "I'm scared because Ken is going away with his mother today," instead of "our mother."
- Serbian: Милан Антонић / Milan Antonić
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