Vibrating Tremor

Tremor has the mild, boyish features of a man with a babyface, framed by light-colored hair. He keeps to plain dress, a button-up sweater worn over a pair of trousers.

In keeping with his fellow party members, he trusts his own skills and readily bands together with other Ninja Village graduates to improve their odds against Flash. He blames Flash for the destruction of the Ninja Village and, hard as his years there were, still holds its code in high regard.

He came out of the Ninja Village's nineteenth graduating class, nicknamed 'Momentum,' the same cohort as Instant Moment, and afterward signed on with the Heavenly Ninja Party. That group confronts Speed-o'-Sound Sonic at his hideout, laying out their bid for world domination and their orders from a figure they call 'That Man,' Empty Void, before demanding Sonic bait Flash into the open. When Sonic instead duels Flash on his own terms, the party breaks in and brands him a traitor, drawing both swordsmen into a fight. Blast then arrives, scatters the ninjas, and teleports everyone to Sonic's hideout, where Saitama has already toppled the Ninja Village leader. Tremor and his comrades throw themselves at Saitama and are knocked down one after another; awed by his power, the survivors try to make him their master, and when he refuses, they resolve to shadow him instead. As a village-trained ninja he boasts speed and reflexes well beyond an ordinary person and fights with a rapier. In the webcomic version of events he died battling Flash and Sonic alongside the rest of his party.