Sabu (サブさん, Sabu-san) a hamster with a pigeon named Françoise. He appears in the series from time to time with different roles. Mainly, he's a seed vendor who feeds anyone he sees. At one point, Boss considered him more of a man than he was.
Sabu doesn't really appear much in the show, but he has a bigger role in special episodes. He likes to rescue hamsters in need. Usually, he likes to rescue the ham-hams from cliffs so he uses his special pigeons to help. He is always ready to lend a hand. Françoise, a white pigeon, is also his girlfriend.