Ronno is the Big Bad of Spongebob meets Bambi, and is a recently recruited member of the Villain League.Thumper tells Bambi to clobber him. But Ronno continues to goad Bambi by insulting his name, "Bambi? Isn't that a girl's name?" But just before the two fawn get in a fight, Ronno's mother calls him and he reluctantly returns with her before he could fight with Bambi.
Later in the film, Ronno, who has become infatuated by her beauty, tells Faline about himself, but Faline still believes Ronno isn't what he claims to be. Then, she hears Bambi screaming and rushes to check on him. Ronno, upset about Bambi garnering Faline's attention than his, shows up to insult Bambi. Thumper pushes Bambi forward to knock Ronno down. Angry, Ronno starts to chase Bambi and while chasing him, Bambi jumps over a chasm and then Bambi runs into his father while Ronno backs away into the bushes. Bambi's father is impressed by the jump and father and son start making their way back home. Ronno tries to jump over, but falls into a mud pit.
Then, he shows later and makes Bambi fight him, and mistakenly pushed Mena into a trap. She tells them to get out of there immediately. Ronno, revealing his cowardice, runs off crying for "Mommy," but Bambi stands where he is, frozen in fear. But he runs off, but goes back to lure the dogs away from Mena. His friends, Thumper and Flower, help him. Then he manages to get rid of the dogs, but he falls down and lands on a rock below him. His father thinks he is dead, but Bambi weakly says, "Dad" and father and son embrace, making the Great Prince change his mind of sending Bambi away.
Then Ronno shows up after Faline and Bambi kiss and swears revenge. But he trips on a turtle, which snaps his nose, making him run off crying for his mommy. And Flower says "See? I told you turtles were scary." Then the animals all laugh.
Role in the series
Ronno reprises his role from the two movies, but is now forced into joining the Villain League with a little encouragement from Fagin. he, at first, was friends with Creeper, Pain and Panic, and Djon for saving their lives from Fagin when he sneaked attacked him, while only giving him small pain to his rear (presumably), it greatly wounded Fagin's pride. Ronno at first is just a cheap bully, turn villain by a greater force. cause of his corruption, Creeper, and Djon, Pain and Panic excape, to later become lougers to gain protaction, and/or get even with Fagin for taking away their friend. In the Dave Felis series, he reprises his role from the above two films, where it is revealed that his adult form was actually a mutation caused by the Toad Army, confirmed when he too unleashed the stock Jurassic Park T-Rex roar uttered by other Toad Mutations. He was later mutated again into a strange clone of Ed the hyena in order to generate yet another rendition of Be Prepared, this time by KOMPLEX. He mutated yet again into the badly drawn monster called Satan Ronno, before being destroyed by the BistroRangers.