The connecting record
shownMob Psycho 100 · vol. 12, ch. 90
Toichiro Suzuki beat Katsuya Serizawa in Mob Psycho 100.
Serizawa was shielding Reigen; Toichiro broke the shield and took his power.
What each of them is ranked on
The winner · Toichiro Suzuki · rank 2
Claw Boss
Raised his power output against Mob step by step to 100%, when before that fight it had never reached forty, and at that output overpowered 100% Mob badly enough that Mob feared for his life — then his body could not contain the energy he had banked over twenty years, and he began to self-destruct. Mob drew the overload into himself. Earlier in the same fight at the tower he beat his son, took back the power he had lent his soldiers, and drained Serizawa. In the ???% arc he jumped from a plane without a parachute, was pinned to the ground, and decided to run.
statedMob Psycho 100 · vol. 11, ch. 88
Says that in travelling the world he never found an esper stronger than himself.
shownMob Psycho 100 · vol. 12, ch. 89
Reabsorbs the energy he had lent to the defeated Claw soldiers.
statedMob Psycho 100 · vol. 12, ch. 90
Before the fight with Mob his power output had never reached 40%.
All 7 citations
shownMob Psycho 100 · vol. 12, ch. 90
At 100% output overpowers Mob, then begins to self-destruct.
shownMob Psycho 100 · vol. 16, ch. 100
Is pushed back and pinned to the ground by ???% Mob, and Sho pulls him clear.
shownMob Psycho 100 (anime) · S02E13
Reaches 100% output and becomes a white, flaming figure.
shownMob Psycho 100 (anime) · S03E10
Leaps from the prisoner aircraft without a parachute.
Beaten · Katsuya Serizawa · rank 4
The Ultimate 5 — Toichiro's bodyguard
Blasted Joseph, the government's double agent, out of a window when the plot against Toichiro was exposed, and later stopped Sho's Charge Bomb — months of stored energy — before it reached his boss. On the tower stairs he fought Mob with his umbrella as weapon and shield until Mob, at 100% Friendship, sent his own energy into him and his memories of friendship with it, and won him over. Later, while Serizawa shielded Reigen with the umbrella, Toichiro shredded it with blast after blast and drained him. In the ???% storm he shielded Reigen until his own power began to drain, and turned back.
statedMob Psycho 100 · vol. 10, ch. 81
Toichiro tells Joseph that Serizawa is the strongest of the Ultimate 5.
shownMob Psycho 100 · vol. 10, ch. 81
Breaks free of Joseph's smoke and blasts him out of the window.
shownMob Psycho 100 · vol. 11, ch. 88
Blocks Sho's Charge Bomb aimed at Toichiro.
All 6 citations
shownMob Psycho 100 · vol. 12, ch. 89
Mob, at 100% Friendship, sends his energy and his memories of friendship into him.
shownMob Psycho 100 · vol. 16, ch. 100
Shields Reigen with his umbrella inside the storm until his power is drained and he retreats.
shownMob Psycho 100 (anime) · S02E12
Has an electric anxiety attack when Dimple takes his umbrella.
What this does not settle
One fight in one work. It is the only result the record gives between these two, and it is evidence about that meeting and nothing wider — not a general matchup, not a rematch, and not a ranking of its own.
The ladder above it is argued from everything either of them has been shown doing; this page is argued from one citation.
Where the two disagree, the disagreement is the point, and it stays visible rather than being resolved by whichever of them happens to be on this page.