Tank
Tanks use Defense to protect their allies and disrupt enemies.
Tank Mechanics: Stall, Poison, Frost.
Tank Heroes
A and S rank upgrades are class upgrades: the options come from the hero's class, not the hero (game tutorial). In the current data the A and S rank options are the same list.
A/S rank options 15

After Stall (30), heal 100% Max HP, gain 100 Mana, and gain +25% Defense.

Stall abilities trigger 6 seconds faster. Backup.

On Stall trigger, gain 45 Defense.

When auto attacked, gain 2 Defense.

After Stall (10, 20, 30, 40, and 50): Taunt all enemies.

Tanks gain +33% Defense against damage from enemies with Frost. Backup.

When auto attacked, deal (+50% Defense) damage to adjacent enemies.

Tanks gain 1 Attack and 1 Magic per 2 Defense they have. Backup.

When auto attacked, inflict 1 (+1 per 100 Defense) Frost on the attacker (Max: 6).

When auto attacked by an enemy with Frost, gain 2 HP/S.

When auto attacked, inflict 1 (+1 per 100 Defense) Poison on the attacker (Max: 6).

When auto attacked by an enemy with Poison, gain 2 HP/S.

Tanks gain +33% Defense against damage from enemies with Poison. Backup.

This Hero gains +20% Defense for each enemy targeting it.

At start of combat, if this Hero is in the back row all Heroes gain +75% Defense.
ZuriThe Gorgon
RowanThe Anchor
SkornThe Bulwark
PimentaThe Rose Knight