Stratagem

Stratagem is Derwin’s Omnitrix's DNA sample of a Gem from the planet Homeworld in Pokémon Sky.

Appearance
Stratagem is buff, with green skin and long brown hair. He wears the quartz uniform, with the Omnitrix symbol on top of the Diamond logo.

Transformation Sequence
Ben turns into a rock, which forms into Stratagem.

Powers and Abilities
He can shapeshift.

He can create a sword to use in battle.

He can roll into a ball.

He can fuse with Black Pearl to make ConFusion.

Weaknesses
If Stratagem is damaged heavily, he will turn into his Gem. The Omnitrix is stuck on it, to prevent stealing it.

Appearances

 * Unhealthy Behavior

Etymology
Strata (ground) is where gems are formed, and stratagem is strategy.