Irwin is the true protagonist of Golden Films' The Jungle King. He is the twin brother of King Maximillian. His hobby is painting. He even paints his bird Daphne. He intends to write a good book. When the king is captured by poachers, General Glump, one of the king's main royal servants, teaches him how to act like a king in order to pose as his brother. He is in love with Leonette, the eldest daughter of a family who tries to pressure her into marrying the king on a Saturday.