Without hesitation, Walter reached out and shook Charlie's hand. He was fully comfortable around ghosts - moreso than any other Pokemon type truthfully.
"Why would he want to see me?" He didn't remember Charlie from his time as a child, so as far as he knew, Charlie should only really know Diana. She had hatched him, even if his Pokemon had created his egg.

As they stepped into the store, Darkness ducked his head down; Walter was six foot tall, so a nearly three foot bird sitting shotgun on him would need to watch doorways. Once in, he immediately scanned the shop over Walter's head, sharp eyes taking in the shopfloor. This was Henry Townshend's city. At any peek of the brunette, he'd need to tell Walter so they could avoid him.