Walter tilted his head, and tried to repeat it. "Mim-que?"

"Mimikyu!"
"Mini-cue?"
"Mimi! Kyu!"
"Mimi-coo."

It seemed to accept that this was the closest Walter would manage and the Pikachu head flopped back and forth in a 'yes' motion. "Mimi-coo." Walter repeated, thoughtfully. "What kind of Pokemon could it be..."