Keith Carberry is the shortstop for the Bluff City Blackjacks. He is not very good at baseball but is keen to improve. His frustration to playing poorly often makes him closed off.
Although he is one of the aliens who has come to Earth to prove that it is worth saving, he does not have a human alias, as his alien name sounds like a human name (a happy coincidence).
His alien form is very small ("gingerbread man sized"), and he wears a suit to stretch him out to average human height. He is too unused to his new large body to play well, and also speaks very loudly as he is used to having to speak up from a small body.
As his alien form is very small, he is good at antiquing and finding hidden things as he can get into small places and can "small antiques".
He is close to Sal Bianchi, and easily makes friends wherever the team travels. Because of this, he has become a favourite with Blackjacks fans.
The back of the baseball jersey says “Carberry”.