Pidgeotto
"My Pokeball rolled off the table and I was free, but all I saw was the culprit's hand hanging onto the window before he let go and escaped." Pidgeotto tells you.
"Was his hand covered in ashes?" you ask.
"No." replies Pidgeotto.
Next, Who will you question?
Pikachu
Squirtle
Bulbasaur
Pidgeotto
Lt. Surge
Giovanni
Blaine