Quote Originally Posted by DJzen
You can use anyone for boosting as long as the boss isn't immune to that GF's element. The boosted GF will still do tons of damage, just not as much as they would against someone weak to that element. Just be careful with the red cross. It means "stop pressing the button now or your damage will drop back down to 75 and you'll have injured your thumb for nothing".

ok. elnoyle isnt immune to ice. but when i boost shiva against it the damage goes down. i know this cause i forgot to boost shiva and the damage was more than the boost.