Bot (voice of Donovan Patton) provides the intelligence and insight for Milli and Geo on Team Umizoomi. When kids need help with a problem or situation, they call Team Umizoomi on Bot's Bellyscreen. Bot's TV screen/computer tummy allows Team Umizoomi to talk with the child and check in. His Bellyscreen also provides information Team Umizoomi might need as they work to help the kids of Umi City.
If Bot's voice sounds familiar, it's probably because his is the voice of Donovan Patton, Joe from Blue's Clues. You might expect him to get out his "handy dandy, notebook!" at any moment. But, in this series, it's a handy, dandy Bellyscreen.