Boulder is an alien in 40: The Last Splixson. He is a Terrasapien the planet Terraxcava.

General Information
Species Terrasapien
Home World Terraxava
Body Rock Humanoid
Powers and Abilities
Abilities Terrakinesis


Enhanced Strength

Enhanced Durability

Voice Actor Dee Bradley Baker
First Appearance Blast from the Past


He looks like a humanoid, with grey rock skin. He has two large rock spikes coming out of his back.


Boulder has the ability to control the Earth to a large extent, ranging from mere boulders to shaping incredible statues.

Boulder has a degree of enhanced strength.

Boulder also has a degree of durabiltiy.

Boulder can also regenerate any missing limbs.

Boulder also has a limited shapeshifting ability.


  • He can only control the earth but not create it. This leaves him at a misadvantage if in a spaceship or any other metal hunk.


40: The Last Splixson

Boulder battles Demonstar, then switches to ConDuckt.

Boulder crushes Demonstar's ribs, undeniably killing him.

Boulder blows the prison bars from their frames.

Anur Chronicles

Boulder engages in a fight with The Wall (Blank), but the battle ends with both of them accidentally fusing together.

Fred transforms into Boulder in an attempt to defend himself from the Ormerowons but was defeated due to his sick condition.

Boulder fought against Lord Transyl's Vladat Army.

Boulder battles and defeats Dr. Vicktor.


  • Boulder is one of a few aliens that survived Fred 40's reboot. It is said that two others will survive it with him.
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