A Support Unit developed by the Leblanc Syndicate. When the time is right, it can use Full-Auto to deal major damage, but fortunately it can't pull a stunt like that very often.
The Battlesnake is an enemy from Final Fantasy X-2. It has no particular weakness and is not a very powerful enemy. Regular attacks are more than enough to take them out without any problems.
Despite being a Fiend Arena enemy, the Battlesnake fights no differently than it normally would. The player therefore should have no trouble defeating it, and should fight it as though it were a normal enemy.
In the Fiend Tale endings, a notable Battlesnake actually hates killing, despite working for poachers in the Calm Lands. But when he drives off two poachers from killing a Protochimera and a Takouba, word spread with Battlesnake becoming the first fiend to protect other fiends as a park ranger of sorts.