[Momo's pretty sure he vaguely recognises that voice even with the slight shift - when you hang out with actors, sharp vocal changes aren't exactly an uncommon thing to encounter - but he's not here to out anyone in public, so he answers the phone with his usual cheery manner.]

Sure is! Do we get a name, mystery caller, or is this the kind of problem you don't want to put your real name to? We don't judge here.

[His tone is slightly conspiratorial, but in more of an exaggerated and comedic manner. He doesn't mind taking a fake name, it's just handy to have something to refer to someone by.]