The Cubs are impoverished children who have made their way into Doctor Claw's life, whether they happened to be begging on the streets in Helsinki or whether he took a shine to them while abroad. They are well fed and given ample room to eke out an existence in his apartment building. The Cubs generally number about half a dozen to eight as some of them come and go, while others are found by parents or authorities and returned home.

Some of the Cubs are runaways and the Doctor doesn't really like to think that they have good homes to go back to. His dream is to save the poverty-stricken youngsters, so anything which goes against this is promptly ignored or covered up.

The Cubs vary in their reasons for hanging around Doctor Claw and many leave after a few years to pursue other lives.

"Let us rip, brothers!"

As the Cubs are basically young kids they really don't have much in the way of powers, apart from a bit of speed on their feet and the uncanny knack to kick a person where it hurts the most. Their active lifestyles often lead to some skill in acrobatics and tumbling, as well as basic thieving skills.

Most of the Cubs are boys aged between eight and twelve, although there have been some girls and some of the Cubs have been older and younger. They often wear new clothes as they toss out their old ones as soon as Doctor Claw offers them pocket money. When on a mission they sometimes wear a Cub outfit which consists of dark brown shirt and shorts, with a brown baseball cap, usually worn backwards.