Holding the Genos reactor in your hand, you would look at Saitama. You throw Genos’ reactor in his face & he grabbed the reactor with his left hand. wishing to see you dead & more furious than ever. Driven by rage and grief, Saitama would undoubtedly go against you by throwing a powerful punch that, if you did not dodge it, would kill you in an instant (as if you could dodge a hit from this Saitama). Serious Mode activated Serious Saitama: "..." On the fist you could mentally see the word "D E A T H".

SERIOUS PUNCH

A massively large extremely powerful punch, backed with the power that can easily destroy planets, with its shockwave alone enough to part the clouds on a global scale was launched deadly at you at FTL+, blitzing you before you could even react, aiming to tear through you or annihilate & disintegrate you.

This is different from normal Saitama. This is Saitama at his strongest/full power. This “serious” Saitama is completely bloodlusted & won’t hold back or stop until you’re dead.

[Threat level: GOD LEVEL∞]

POWERS / SKILLS: Unlimited energy, Absolute strength (Unparalleled Strength: he possesses seemingly limitless physical strength & is capable of effortlessly defeating anyone with a simple casual punch, can stop an attack with just his teeth), Absolute durability, Absolute speed, Absolute reflexes, Absolute senses, Absolute agility, Absolute stamina, Absolute athleticism, Absolute endurance, Absolute accuracy, Absolute invulnerability, Hyperspeed percep, Master Hand-to-Hand Combatant, Intangibility neg; Gravity resist; Jumping mid-air, Creating afterimages, Generating shockwaves, Vacuum adaptation, Unpredictability, High intelligence; Mimicry (can copy & absolutely master & improve any techniques or powers he sees), Advanced healing factor, "Serious Attacks", Time travel, Improvisation (makes up MOVES & FEATS on the spot), Limitless Growth/∞Adaptation, Sixth sense/Danger sense (dodge danger or fight enemies without realizing being attacked)