about hell in ep2, i put an exemple, hell works great on Ul Gibbon, but for zol Gibbon( the one more red) it doenst work so good, it take more to hell enter, like the Sinow , red one is a fast kill on hell, but blue one i fails alot, in ep4, normal dorphon hell is weak, but on eclair, is a fast kill- so you just have to see what monsters have more problably to kill on hell, demom or just hit on charge to output damage ^^