Sergeant Appo

Appo was a Sergeant who served in the 501st Legion. He first served on Umbara under Pong Krell. He served as Krell's assistant when Rex was in battle. He called Fives and Jesse's execution. He fought Krell alongside the other clones and placed the binders on him. He reported Kenobi's invasion to Rex and informed of the Republic's victory. He likely stayed at this position until Rex's death. By Revenge of the Sith, Appo had rised to the rank of Commander. Commander Appo replaced Rex as leader of the 501st, suggesting Rex's death. During Order 66, he and the rest of the legion were given the order to attack the Jedi Temple and kill all inside by Darth Vader, which was followed. Appo then joined the Stormtrooper Corps, and the 501st Legion became known as "Vader's Fist." Appo was Vader's Second In Command and assisted him in hunting down the remaining Jedi. When hunting down Master Roan Shryne, Appo was decapitated by the Jedi. Commander Bow replaced Appo and filed the report on his death.