Binky is Zowie's best friend and Billy's little brother. He was 1 starting with Season 2. He turned 2 on Binky's Birthday from the fifth season. around season 5-6 he was more included playing with the older kids along with Zowie. He debuted in Baby Binky from Season 2. He is one of the three pentagonists of Rolie Polie Olie, and one of the tritagonists of The Great Defender of Fun and The Baby Bot Chase.
Binky is a toddler robot that has a diaper and a belly button. Like Zowie, his body is down while he‘s round. Also Zowie doesn't have her own button like Binky.
Binky is a happy, playful robot who's fun loving, cute and friendly. He always wants to be in the older kids activities like Zowie, even though he can’t speak as much as Zowie since he’s 1 in most episodes. He’s very sweet and always happy. Sometimes he and Zowie outsmart Olie and Billy, like in the episodes centered on Halloween.