The Professor of course!

Ash sprinted down the hallway until he came upon Oak's office. He barged in without knocking and saw the Professor, who looked up in surprise and shock.

"Ash! What are you doing in here?!?" Exclaims the renowned Pokemon researcher.

"I need to talk to you about the package you sent me. It's extremely important." says Ash, who is too out of breath to really put any emotion into his response.

"I guess I should have thought you would already have had questions. Very well then, but first; come out here Daisy." He sighs as he looks down underneath his desk. Almost immediately, his granddaughter Daisy pops out from underneath the desk, completely naked.

"Anything else I can do for you Grandpa?" she asks

"No not right now dear, now back inside your ball." Replies Oak very casually. He then pulls out the very same kind of pokeball he gave to Ash and points it at Daisy and says "Return". With that, a beam of red light appears from the pokeball and sends Daisy inside.

"Now I bet you have a lot of questions for me" Oak says to Ash, giving him a great big smile.