Zwei

Zwei is the pet dog of Ruby Rose and Yang Xiao Long. He first appeared in the episode "Field Trip", when he was mailed to Beacon Academy from Patch by Taiyang Xiao Long along with a pile of canned dog food and a can opener.

Taiyang sent Zwei to his daughters to take care of him temporarily due to him leaving Patch for undisclosed reasons.

After the Fall of Beacon, he went back to Patch with Yang and Taiyang. He is seen sleeping at home and later actively watching the two spar.