A permanent rucksack eh..
maybe he is really a programmed android and that is his powersource in the back pack....maybe he has been sent from a thousand years in the future with the express mission of pi$$ing off all of paintball....
then again maybe seeing as he is apparently so thick and stupid he is really a suicide bomber who forgot the explosives.
then again...maybe its his viagra supply because he cant keep getting it up so often with all the shafting of paintballers he is doing.