Complex sentence: First appearing in the episode "Feeding Time", Rudy Jones is a janitor at S.T.A.R. Labs that's caught mid-robbery with crook Martin Lebeau (voiced by Robert Patrick) while they are trying to steal a chemical stored in barrels with unknown properties.
Split into simpler sentences: First appearing in the episode "Feeding Time", Rudy Jones is portrayed as a janitor at S.T.A.R. Labs. He and crook Martin Lebeau (voiced by Robert Patrick) stole barrels containing chemicals with unknown properties.