Millennian Io vs Flying Dragon Agheel: who would win?

Flying Dragon Agheel favored — Slight edge (~55%)

Millennian Io · Godzilla · Unstable State/Orga

Tier

8-A

Attack Potency

Multi-City Block Level

Speed

Subsonic, up to Supersonic+

Durability

Multi-City Block Level

Flying Dragon Agheel · Elden Ring · Base

Tier

8-B, up to LOW 7-C

Attack Potency

Town Level

Speed

Transonic

Durability

Town Level

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