"It must be a compulsion with them, if this one is painting the walls despite the lack of sufficient light to see by."

"Smeeeear..."

He checks his pokedex. It only really learns one move, but that move can be used to copy anything. Possibly useful, but it sounds like it'd require a lot of luck to get the right ones.

Sensing that it's in the presence of a trainer, the Smeargle starts to back away.

"Smeeee.... Gllllleeee..."

"I am not here for you," Keldor informs it. "I am seeking another."

"...glllleeee..."

Doesn't sound very convinced.