"Another speedster?" How many speedsters actively lived in the world? That was a question he would never get an answer to. He only knows of himself and Barry here in Madison Valley. He's sure that there were far more than that around. Every world, after all, was a bit different.
He notes Lucky and gives a soft smile to the dog before looking toward Kate at the question of him knowing Clint. Though, he's not quite sure how she knew Clint. Except that she explains a moment later.
"Myself and Wanda both know Clint, have for years. He's family to us."
It hadn't started out that way, but Clint had become a major part of their lives. Something that Pietro would not give up for the world.