Marine is hyperactive as hell, but she's passionate and loves mechanics as much as Tails does. I think they'd be cute if she could just settle down a little. Someone as attention-starved as she is — growing up alone with no parents or discipline is probably a huge cause of that, btw — could probably use a lot of reassurance to remind her she's worth it and doesn't have to act out to get her needs met. I think with a bit of work, they'd make a cute couple when they got older.
I know Tails/Cream or Tails/Cosmo are the leading Tails ships, and Marine is hardly anybody's favorite character, but damnit, they both like mechanics and went on that adventure togetherrrrrrr ugh so cute
Marine is so obnoxious, it's great, and I love her. :3 You should play Sonic Rush Adventure. It has a great soundtrack and is highly underrated if you ask me. (Coral Cave. Rock on!)