Despite being a hero, he has little compassion for others if it won't benefit him. His other skills are amplified twice the power, and his shrouded with shockwave aura.He appears to have an avid interest in any form of high technology, as shown when he sent one of his robots to collect remnants or look for anything that might be useful in the wreckage of the Dark Matter Thieves' ship. In Serious Mode, his punches are faster and stronger than before. When Saitama's awakening bar is full, he activates Serious Mode. In Serious Mode, Strike is even larger and can do a lot of damage. It can knock other players back and can do a lot of damage. Saitama clunches his feet, and sends his fist forward, causing a massive shockwave. It does even more damage and can knock someone even farther than before. In Serious Mode, Saitama sends an even more amount of the ground towards his opponent. It doesn't do too much damage, but where it does an average amount. Saitama does a squatting position and puts in his hand into the floor and flips the ground towards his opponent. It strikes super quickly and in a range of 6 feet.

In Serious Mode, the move changes into 'Serious Consecutive Normal Punches.' The punches become white and in the shape of an oval. Saitama launches a series of punches that can deal an average amount of damage. Saitama wears a white cape, yellow rubber suit, red gloves and boots, black belt with a golden circle emblem, and has a white zipper near the neck. Saitama is bald, he claims that the reason he's bald is that of his training. which boosts his strength and combat speed a bunch. Saitama's Strike(Serious Punch), which is a very devastating move. Table Flip, which he throws the floor towards his target. Saitama has various types of moves such as Consecutive Normal Punches, which he strikes his opponent really fast. Saitama is famous for his bald head, his physical prowess, and his catchphrase 'I am a Hero For Fun.' Saitama is followed by a disciple named 'Genos,' who is a cyborg that admires Saitama and his strength. Saitama trained his body ever since this specific incident that led him to follow his dreams. Saitama is the protagonist of One Punch Man.

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