He usually seen exercising himself by wearing a heavy bracelet while playing darts. But his sense of responsibility as a leader is still very well intact, as shown when if his crew is ever in mortal danger, he would sacrifice himself, much like Aka Red did for him, to ensure their safety. His strength is displayed in a flashback in episode 12, where he rips the Zangyack tracking collar off Joe's neck, as well as in episode 21, where he rips the Heart of Hades right out of Ryuuwon's chest. Marvelous' bounty was already established at Z=1,000,000 and raised to Z=1,500,000 when they get to Earth. This is eventually raised to Z=3,000,000 and then Z=5,000,000. After the death of Warz Gill, Captain Marvelous' bounty achieved the "Unlimited Reward" status, implying that anyone who takes on and completes the task can name any price that comes to mind. Even though he doesn't want to feel anything for Sally who Basco used, he got close to her and Basco let a bomb go inside of her. Marvelous was knocked out but survived. Captain Marvelous manages to defeat Basco to retrieve the five remaining Great Powers that the privateer had stolen.
He is the only Gokaiger to mostly become just his color, rarely becoming another color. He becomes Bouken Silver when the whole team dons silver in Episode 18, he becomes Gao Yellow in Ep 44 when the team becomes Yellow, Denzi Green in Ep 43 when they all become Green, Gosei Blue in 45 when they all become Blue, Pteraranger when they become Pink and Big One when they become White to Gokaiger vs. Gavan.
In Kamen Rider × Super Sentai: Super Hero Taisen, Marvelous leads the Dai-Zangyack to obtain the Great Power of the Kamen Riders and the "Ultimate Treasure in the Universe."