Sonia seemed to be glad to see Cedric and Marilyn but hesitated when it came to Marlon. "Sorry, I dont't seem to recognize you from the selection process. Did my grandmother invite you personally?"

Marlon took out the invitation and showed it to Sonia.

"Professor Magnolia? No, she didn't. It was Chairman Rose that wanted me here. His vice-president and secretary, Oleana, sent me this invitation." 

Throwing a quick glance at Magnezone, Marlon added: "However, these two have crossed my path in the most entertaining way and it would be boring to continue my trip solo. If none of you mind, I'd like to tag along to the lab and perhaps even get a local pokemon from the professor. Magnezone here has to go home soon." 

Magnezone buzzed in agreement.