Ajit:Ajits' Resistance makes him but an average Dungeon hero.
Alamar:Alamar has an incredibly powerful specialty but his secondary skill Scholar makes him a lot less powerful. This makes Alamar a great Dungeon hero, but not the best.
Arlach:Arlach is a good garrison hero and may even be useful as an offensive hero in small maps because of his Ballista.
Dace:Dace is a very good Dungeon hero in small maps and he may even prove quite valuable in larger maps, certainly when you have lots of Minotaurs.
Damacon:Another fine supporting hero because of his 350 gold per day, but the Advanced Offense could even give him enough combat value to be a main hero in small maps.
Darkstorn:Darkstorn is an average Dungeon hero and his Learning can even be an advantage in small maps.
Deemer:Deemer is actually a below average Dungeon hero because of his Scouting, but his specialty Meteor Shower is a mighty weapon in small maps. It's also very good to clear creatures around your town during the early game.
Geon:Geon is one of the worst heroes in the entire game.
Gunnar:Gunnar's specialty makes him one of the best Dungeon heroes and one of the better heroes in the entire game. His Logistics provide him with great mobility on the map and his Tactics give his troops a great mobility in combat.
Jaegar:Jaegar is a below average Dungeon hero because of his Mysticism.
Jeddite:Jeddite would already have been a great hero with his Advanced Wisdom but it's his amazing specialty Resurrection that makes him the best Dungeon hero and one of the most formidable heroes in the game.
Lorelei:Lorelei is a below average Dungeon hero.
Malekith:Malekith is certainly an above average Dungeon hero. His specialty increases the damage of his spells a lot, which means that he is one of the most powerful offensive spellcasters in the game.
Sephinroth:It's always a wise thing to recruit Sepinroth because of the daily extra crystal. In any size of map however, Sepinroth is more than able to fulfil an offensive role with her two excellent secondary skills.
Shakti:Shakti has two good skills, but his specialty makes him but average.
Synca:Since Scholar is bad and Scorpicores aren't that great either, Synca is a below average Dungeon hero.