Black would never assume that this person could be anyone else. Especially not if that 'anyone' was a Pokemon. Unless 'Cheren' was a Zorua or Zoroark, which just seemed unlikely the way those Pokemon with him were acting.

"I didn't even notice you." He scratches the back of his head a little sheepishly, but the whole 'mistaken' thing has him baffled.

"I think I would know my own best friend when I saw him."