Rune King Thor & Galactus Run The Gauntlet

Rune King Thor

-The Necro-Sword
-The Destroyer Armor
-The Power Gem

Galactus

-Has fed on four Planets

The Gauntlet:

World Breaker Hulk & World War Hulk
Wally West & Zoom
The Sentry (Void) & The Runner (Space Gem)
Pre-Crisis Darkseid & Thanos
Superboy Prime & Kal Kent
Silver Age Superman & Superman Prime (Guardian AMP)
Old King Thor (Odin-Force) & Old Galactus (1 Planet)
Surtur (Twilight Sword) & Odin Destroyer (Odin-Sword, Uni-Mind, Asgard)
Tyrant (Fully Powered) & Dark Phoenix (Jean Grey)
Adult Franklin Richards & Molecule Man (Not Pre-Retcon)
The Mad Celestials
The Mad Celestials (Merged)
The Fourth Celestial Host
The 3rd Galactus Engine (Cancerverse)

Galactus is destroyed when they meet Tyrant. None will be able to touch RK Thor, or damage him in the slightest. He is dead to the physical universe. Not sure why people keep placing him in threads? He was a complete omniscient being. No offense intended t0sh, but you can't kill the already dead, and since he was without fault he was unable to be manipulated by universal laws. RK Thor pushed Mangog around like he wasn't even there. If RK Thor was 100, Mangog was less than 1. Crazy, but true.

Stops at 2, when Zoom plucks them from their timelines. RKT? Sure. Zoom attacks when he's lowly Donald Blake. Galactus? How about a point in time when he is starving?

Or maybe....he removes the Surfer from Galactus' timeline. Which means he never got the Surfer as a herald, and died from hunger....

RKT with power gem solos all rounds at once with ease.
Without gem but with NS, they stop at galactus engine.
Without gem or sword, they stop at franklin richards.