"Gladiator Beast Augustus" + 2 "Gladiator Beast" monsters Must first be Special Summoned (from your Extra Deck) by shuffling the above cards you control into the Deck. (You do not use "Polymerization".) If Summoned this way: You can Special Summon 1 Level 7 or lower "Gladiator Beast" Fusion Monster from your Extra Deck, ignoring its Summoning conditions. At the end of the Battle Phase, if this card battled: You can return it to the Extra Deck; Special Summon 2 "Gladiator Beast" monsters from your Deck.
It's pretty clearly based on a snake IMO. Just made bipedal to match the other GB's. (Its head and tail are pretty snakelike, and it has a scaley underbelly, which carries over into its legs as well, which is pretty unusual.)