Eloa - The last astronomer - human hero
Follow up : Give an ally in this lane +1 power. Inexhaustible

Taz'gun - Of the old moon
Begin the game with an essence distiller

Thoric of the hammer
Round end: gain +1 armor
(the only hero with 2 attack and exhaustible)

Dominique Boutroux
Follow up: Restore one health to an ally in the lane

Mariana
Battle start: Summon jack (a bird that has 1 attack and 1 health)

Elder Gryx - she who swims alone
When an ally dies, attacks


Humans:
Follower - no special ability, default starting unit

Hunter - human archer
Gains +2/+3/+4 power at the end of their turn if they did not attack. Inexhaustible.
Note on usage : You have to put him in the front if you want him to not attack. With enough power accumulated, he can one shot enemy heroes.

Druid - human mage
Summons two doves/ravens/wolves
Note on usage: Synergy with the mage that gives your summons extra attack.

Flame Adept - human mage
Also damages enemy in the same column

Armored knight - human fighter
Has bonus attack equal to armor
(Note: Level 3 version actually has -1 attack and +4hp compared to level 2 version)

Armorsmith - human fighter
Round end: Gives another ally in this lane +2/+4/+6 armor

Squire - human fighter
Round end: Gives another ally in this lane +1/+2/+3 power

Sage of the world - human mage
Hope - Gain +1 power

Mage of the sun - human mage
Gain double the amount of power

Battle mage - human mage
Restores health when it gains power

Cyril, master animist - human mage
Death - transform
(only found in the abyss)

Edric, fencing master - human fighter
Attacks twice, inexhaustible
(only found in the abyss)

Beasts:
Hypogean - beast fighter
Has +1/+2/+3(?) attack if your party isn't full

Aguatilis - beast archer
Gains +2 (more at higher levels) power when an ally dies

Martaur - beast warrior
Death: Gives all allied beasts +1/+2 attack

Ixotle, hatchling ward - beast mage
Death: Fill your board with hatchlings
(only found in the abyss)


Elf:
Haruspex - elf mage
Doom - Deal +1/+2/+4 damage to a random enemy
(Note: this is really good at clearing crowds)

Ranger - elf archer
Whenever an ally is summoned, gain +1/+2/+3(?) power

Sword Dancer - elf fighter
Has +1 attack at maximum health, inexhaustible

Cultist - elf mage
Doom - Restore +1/+2 health

Fey Adept - elf mage
Poisonous. Allied summoned units have +1/+2/+3 attack.

Void summoner - elf mage
Round end : Summon an enemy lesser/normal/greater void wisp
(greater void wisps deal +3 damage to all enemies)

Night marksman - elf archer
Doom : Gain +2 power

Dwarf:
Berserker - Dwarf fighter
Counter - Gain +1/+2 power

Battle cleric - Dwarf mage
Follow up - Restore 1 health to all allies in this column



Gnome:
Enchanter - Gnome fighter
Round end: Give a random mage(or all mages at later level) +1 power

Others:
Ares, the lost knight - elemental fighter
Whenever this character gains armor, they gain +2 power instead
(note: this character gains power for each instance of armor addition, so it doesn't matter how much armor is added if it is added only once. He is not a replacement for armored knight!)