The Original Starwalker vs Kamen Rider Shuki: who would win?

Kamen Rider Shuki favored — Slight edge (~55%)

The Original Starwalker · Undertale · Base

Tier

8-A

Attack Potency

Multi-City Block Level

Speed

Average Human, up to Ftl

Durability

Multi-City Block Level

Kamen Rider Shuki · Kamen Rider · Oni Armor

Tier

8-A

Attack Potency

Multi-City Block Level

Speed

Supersonic+

Durability

Multi-City Block Level

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