Ant-type Kaiju vs Ritsu Kageyama: who would win?

Too close to call

Ant-type Kaiju · Kaiju No. 8 · Base

Tier
7-C
Attack Potency
Town Level+
Speed
Subsonic
Durability
Town Level+

Ritsu Kageyama · Mob Psycho 100 · 100%

Tier
7-C
Attack Potency
Town Level+
Speed
Subsonic+, up to Massively Hypersonic
Durability
Town Level+

A heuristic estimate from normalized VS Battles Wiki stats: tier, attack potency, speed and durability.