I admit, I wasn't expecting much because I don't see people talking about them very much, they aren't prominent in spin-offs and the general "chibi" art style of the game doesn't make them stand out as much as some of the more stylish looking casts, but they have great chemistry together. I thought Kiefer was gonna be some smug asshole based on his smug artwork, but he's a pretty cool dude with an adventurous spirit. Maribelle is the kind of character that could've been really annoying if done wrong but in here I find her bratty behaviour endearing since it's done in a pretty lighthearted manner, and she's a good kid at heart.
Little Underling Goku isn't as cool as Awesome King Goku (the GOAT), Legendary Hero Goku, Zenithian Hero Goku or even Trenchcoat Goku, but he's pretty neat too and has a sort of common kid charm to him. I've been roleplaying as a bit of a troll, saying No at the least appropriate moments for comedic effect (except at serious situations, like the
).