When using possession for 25 points from Adara on Avx Cyclops , can he use probability control with 8 range through walls?

I CAN STILL SEE THE DREAM: Improved Targeting: Ignores Blocking Terrain. When a ranged combat attack resolves, any blocking terrain along its line of fire to the target is destroyed; May make a ranged combat attack when adjacent to an opposing character.

POSSESSED: Click the Possessor's dial to the same click number as this character and change it during the game in the same way that this character's dial changes. At the beginning of each of your turns or after this character takes or is healed of damage and actions resolve, you may choose 1 power showing on one Possessor's dial and 1 combat value on one Possessor's dial higher than this character's printed combat value. This character can use that power and modifies that combat value by +1 until your next turn or until it is healed or takes damage. If the Possessor is turned to a KO click, it is removed from the game immediately.

Yes. When using a power they draws a line of fire you can use Improved Targeting.

Awesome, I thought so. Gonna boost his range up to 11 via Adara stat boost perplex and elctro blast ring for max prob fun vs the wife lol

Same with OW or Perplex on the IIM Iron Man, plus you can also use the IT for Theme Team Probs so it's not unique to the entity with the figure.
Also, FWIW, when you use a non-attacking power like these, the walls are not destroyed, either... so you can OW/Perp/PC through walls as many times as you're allowed and the wall will still be there. Not comic-accurate, but a dirty trick to use none the less.