Mimir vs Hel: who would win?

Hel favored — Slight edge (~55%)

Mimir · God of War · Base

Tier

1-C

Attack Potency

Complex Multiversal

Speed

Immobile, up to Immeasurable

Durability

Complex Multiversal

Hel · Fire Emblem · Book III-VI

Tier

1-C

Attack Potency

Complex Multiverse Level

Speed

Massively Ftl+

Durability

Complex Multiverse Level

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