C-3PO
C-3PO, also called See-Threepio, is an existing droid from Legends.[1]
In 5 ABY, after Luke Skywalker and R2-D2 had left for Mindor, C-3PO was at the DRAPAC facility on Mount Yoda on Dagobah. When Mammon Hoole arrived there in the guise of Zak Arranda, C-3PO greeted him on the landing platform and enthusiastically showed him into the facility, voicing excitement at the prospect of Zak and Tash enrolling at Dagobah Tech.[2]