Scarface (スカーフェイス Sukāfeisu) is the "Plasma Energy Reploid: Knight Type" from Mega Man X: Command Mission. He serves as Epsilon's right-hand man and was the third member of the Rebellion Cadre. A noble knight-type character, he stands by Epsilon to the very end supporting the ideals of the Rebellion. Scarface possesses a deep sense of honor and loyalty, following Epsilon's orders to the letter and fighting with the valor of a true knight.
In Chapter 9, he attacks Central Tower by himself after the Hunters leave the Melda Ore Plant, believing they had taken the Supra-Force Metal from the missile. Interestingly enough to note is that Scarface never kills a single reploid that attacked him at the Central Tower base - as a matter of fact, only if someone assaulted him would Scarface himself retaliate. Even further, after X and company intercept and fend off his attack, they encounter a damaged reploid who reveals that despite the fact that he attacked Scarface, the reploid knight showed him mercy and even healed him. All this shows that he doesn't like to kill unless it is necessary, and demonstrates that he was simply there for the Supra Force Metal.
The encounter with Scarface, while confusing X as to why the Rebellion would want to mess around with the Supra Force Metal, also causes X to finally start to wonder how Maverick the Liberon Army truly was. Upon his defeat, Scarface returns to the Rebellion headquarters at Grave Ruins Base, where he takes a final stand against X with Epsilon watching in the facility's Hall of Glory. However, Scarface's pleas for Epsilon to escape as he holds back the Hunters wind up in vain, as immediately after Scarface painfully exclaims "Glory to the Rebellion!" upon his end. Epsilon then engages the Hunters and loses the ensuing battle. Scarface's element is Thunder.
Trivia
It is interesting to note that by the time of Chapter 9, Scarface is the only Rebellion Army Cadre left; the others had all been destroyed by X and his party.