Granbell Rosso vs Darth Krayt: who would win?

Granbell Rosso favored — Slight edge (~55%)

Granbell Rosso · Tensei Shitara Slime Datta Ken · With Ultimate Skill

Tier

1-C

Attack Potency

Complex Multiverse Level

Speed

Relativistic+, up to Speed Of Light

Durability

Low Complex Multiverse Level

Darth Krayt · Star Wars · Prime Krayt (Fate of the Jedi)

Tier

1-C, up to 1-A

Attack Potency

Complex Multiverse Level, up to Outerverse Level

Speed

Ftl+

Durability

Street Level, up to Outerverse Level

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