Countin' Carl

Countin' Carl is a superhero and the protagonist from the Nick Jr. interstitials of the same name.

He wears a blue cape decked in numbers, a yellow shirt (with the number of the day), black pants, shoes, and a red bike helmet, as instead of flying, he rides a bicycle.

On his bicycle is a Counting Communicator that tells him when he is needed, and who needs him.

Whatever a certain child or group of children is going to play some sort of game that requires a certain number of something, and he or she (or "they," as in the one about the number five) doesn't know how many of something to use, he tells them to use the number of the day, but they don't know how to count to that number, so he helps them out, one item at a time. Then he is off.