Largo is another villain that appears in episodes 5-6 of the OVA. His body is that of a Super Boomer, but his mind and persona is that of the late Brian J. Mason. He is a being able to link his mind up to the USSD sattelites and annihilate three GENOM towers at once, shown as a demonstration of what he's capable of. his powers are God-like and deadly, so much so that Priss is nearly killed. It was only due to the Knight Sabers as a whole and Leon McNichol that saved the day that Largo was defeated. He resurfaces in the Crash sequel and it is shown he has a connection to Sylia.

(Source: Wikipedia)