Felix was one of Catwoman's henchmen.
History[]
Catwoman, Leo and Felix steal one of two golden cat statues from the collection of Mark Andrews. They also manage to steal the second despite the Dynamic Duo setting a trap for them.
After capturing Batman and Robin, Catwoman sets a tiger on Batman while Leo and Felix drop Robin into a tiger pit. However Batman escapes and saves Robin, and then they have a fight with Leo and Felix, ending with Leo escaping and Felix left behind.