I have 7 heros and they all are good. I'm wondering who to keep for my main team. I have Abyss Demon (keeping), Pan Goli, Blockhead, Arctic Lord, Won Ton, Rath and Bullhead.
Bull and Block are probably best left as hero aids, but that's it. Bull increases the enemy's dmg taken, which is useful in gb and br, as well as buildings in gc when you have wolf in wolf form
Main team: Abyss, PG, WonTon, Rath, BullHead.
Aid: Blockhead on your Abyss to boost ATK rate, to boost the healing effect. Arctic Lord is pretty rubbish as a main hero, or as an aid. Don't invest any more in your Arctic Lord.
1) Blockhead is used better as aid rather than tank, you need better tanks like landslide or Berseker, both can be purchased by rings(12k or 8k rings) if unable to hire them in 10x hire.
2) Pan Goli is great as damage dealer
3) Won Ton is enemy stunner that is definitely needed(GS is another option), just use hammer with him
4) AD as healer
Fifth you can use Bullhead or replace it with Rath in case enemies has more flying units.
Artic Lord use as an aid