SuperMansion Episode 1.06 Lex

Lex Lightning shows up claiming to be Rex's daughter. American Ranger, Black Saturn, and Brad start a rock band to impress the beautiful Lex.

Lex Lightning comes to the mansion and reveals herself as Rex's daughter. Rex tries to bond with her but panics and abandons her at a mountain. Sgt. Agony tries to use this as an excuse to shut down the League of Freedom because Rex is a bad father, so Rex pretends to be good to Lex to improve his reputation. Lex discovers Rex's ruse after their battle with Robo-Dino, who only agreed to a fight if Rex sells him the rights to his name. Lex leaves, but is kidnapped by Robo-Dino to get revenge. Rex and Lex fix their relationship and stop him.

The male members instantly develop a crush on Lex, and after finding out she likes bands they form a band called Razordick. Despite their lack of talent, they end up signing a contract with Jewbot's rabbi, and they can't get out unless they find a song that their manager likes. They do release a single, but the song is a critical and commercial failure, while the song their manager refused to allow them to record turns out to be a big hit... for the manager and his new group.