Cardin Winchester/Affiliation

Beacon Academy
Cardin is a student at Beacon Academy.

CRDL
Cardin is the leader of Team CRDL.

Jaune Arc
Jaune has been bullied by Cardin for weeks since class started and Cardin seems to view Jaune as weak and worthless, even suggesting it would be fine if Jaune were to be killed by a Beowolf.

Velvet Scarlatina
Velvet is another victim of bullying by Cardin, with his fellow team members taking part in the bullying. It appears their actions are motivated by her status as a Faunus.