Young Xehanort vs Octomon: who would win?

Octomon favored — Slight edge (~55%)

Young Xehanort · Kingdom Hearts · Late-KHBbS and KH3D

Tier

1-C

Attack Potency

Complex Multiverse Level

Speed

Infinite

Durability

Complex Multiverse Level

Octomon · Digimon · Dagomon (GRB Infected)

Tier

1-C

Attack Potency

Complex Multiverse Level

Speed

Immeasurable

Durability

Complex Multiverse Level

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