You are the Twin Brother of Steven and Ruby, Yang, Weiss and Blake are Crystal gems too and so is team JNPR and Zwei is Like Lion but a Wolf and you dress like Steven and this what Team RWBY and JNPR's Gems are
Ruby: Rubyllite she dress the same but more shiny and her Gem is on her back

Weiss: her gem is a Agate and its on her Side and she dresses the same but more crystallized

Blake: her gemstone is Black tourmaline and she dresses the same but more Crystallized and her gem is on her head

Yang: her Gem is a Yellow Sunstone and she has two of them like Garnet but she's not a Fusion and she has bigger Versions of Ember Celica and she dresses like a yellow Jasper

Jaune: he's a Yellow Topaz  he looks the same but his Armor looks more crystallized and it's his gem in the middle instead if his Symbol

Nora: she's a Spinal and she Dresses like a Pink Garnet and her gem is on her hand

Pyrrha: Shes a Jasper but her gem is on her chest
Ren: he's a Emerald his gem his on his Forehead and his out fit looks more crystallized

Hey guys here you go my RWBY SU CROSSOVER also comment down bellow if you want Jaune and Ren to be girls or not and I'll update soon and until next time bye😊