@Larry's Hare Freedom Fighters from Sonic World's equivalent to Australia, Downunda (Really great name, Archie... *Rolls eyes*) They first appeared in a mini-series focused on Tails. The other members include Wombat Stu (Har har) Guru Emu (Who was a hippie emu, which didn't make sense since hippie culture isn't THAT present in Australia) And Duck Bill Platypus (Who's quite possibly the worst-looking platypus I've seen. He's literally drawn like a beaver with a beak! Good thing DB Platypus from Boom and Dr. Starline from IDW look way better than him) They had a newer member intoduced very late during Ian Flynn's run, Thrash the Tasmanian Devil. He was very one-dimensional, being a racist bigot who hated echidnas (Due to Ken Penders being the asshole that he is, they weren't allowed to use the echidnas again, so they had to find a way to axe them all, by having Thrash dump literally all of them but Knuckles into a dimensional void)
Barbie was often ship-teased with Tails, which is something that makes you scream "what were they thinking?!" due to the pedophilic implications.
As mentioned before, Walt (Team leader) is a male wallaby but he has a pouch. Only female marsupials have a pouch, which is why you never give them to a male one.

who are these dweebs

Trans man kangaroo.

Rule number one for when making a male marsupial character: Never EVER give them a pouch, only females have those.