Btw, a note on Premium costumes... the streetfighter reinforcements are EPIC! Lil Guile does a flashkick, Blanka does his shock, Ryu does his spinkick (I think, can't remember), Ken does his flaming uppercut!
Magnus Spellbane: the #1 fastest hero since he can tele across the map! His mirage allows for 1-2 clones of himself (that do no damage but hold monsters) and he gets an AoE spell with superlong range that is like meteor.
Ignus: this guy looks better than he is... one of his moves turns him into a fireball that sort of teleports him to an enemy doing damage, and he has an AoE damage skill.
King Denas: this guy is hilarious, he's carted around on a bed by 2 farmers, one of his skills buffs nearby attack towers increasing their range significantly, and his other is like meteor which he can cast frequently.
Elora Wintersong: this hero is pretty cool, she can lay down a patch of ice to slow ground enemies, and can rain icicles in an area that I think might slow enemies.
Ingvar Bearclaw: this hero is my favorite melee! He can summon 1-2 trolls that remain in the area summoned and his bearform increases his attack speed (among other things) by a lot!
I've tried all the heroes and I'll describe the benefits of each:
Alleria Swiftwind: one my favorites, she is the 2nd fastest hero with multishot every 3-4 attacks and summons a strong wildcat that follows her.
Sir Gerald Lightseeker: this guy gets tons of defense capability, with a shield that blocks all attacks for I think 1-2 seconds and a nice buff to surrounding units.
Malik Hammerfury: Malik gets very strong offensively with an area attack hammer skill and his earthquake targets a larger area attack.
Bolin Farslayer: this guy is my absolute favorite! He likes to litter the area around him with cute little mines and his tarbomb slows all ground enemies in a large area for a short time.
 "Kingdom Rush Frontiers"){kind=icon}
 "Stick War"){kind=icon}
 "Kingdom Rush"){kind=icon}
 "Incursion 2: The Artifact"){kind=icon}
 "Cat God vs Sun King 2"){kind=icon}
 "Monster Slayers"){kind=icon}
 "Deadly Neighbors 2"){kind=icon}