The Holo-Arena

Bob is a millionaire, who sometimes likes to watch the fights, so has hired some handypersons to install a Holo-Arena for him. It resembles the Circus Maximus in Rome, but on a much smaller scale. The scenario origins might be books, films, series, mangas, animes, radio dramas, short stories and so on. The possible genre / genres can be comedy / horror / demons / undead / beyond / monsters / hidden / lost / extinct highly evolved / advanced cultures / civilizations / lovecraftean / fantasy / sci fi / psionic and / or trans-n-dimensional. It's his choice. There he can set up fights of his own design, with defining the members of the fractions himself. There might be between 2 and 10 OTHER factions though, who might fight EACH OTHER. The factions CAN wound and even kill each other, but WITHOUT blood or gore. Each one's character might be GOOD / NEUTRAL / EVIL / UNKNOWN. 2 factions might be ALLIED / NEUTRAL / ENEMIES towards each other. If 2 factions are at war with a THIRD one, and ALLIED to each other, there is of course the possibility of a pact, that CAUSED this situation and demands giving military AID, if the other is unlawfully / untowards / injustly ATTACKED.