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Legend says war bots have been guardians of the crown for generations. Now the king and queen are abducted and with the princess missing, people in this land have forsaken this legend. However a Warbot that's been dormant for thousands of years is gathering strength in secret, and when he awakes, he will be the mightiest in the league.
Use on Your TeamEdit
XO is a very interesting hero. While both his damage and support (mostly healing) modes are effective, because they are dependent on random changes between modes it can be difficult to use him effectively on your team. On the other hand, he is also one of the more difficult healer's to take down; so when players manage to get enough soulstones to get him to 4 or 5 stars, you will see him frequently in defensive style teams.
How to getEdit
Only available from Events.
Guardian of Realm
|Battle mode: deals damage to 3 targets with the lowest HP percentage, and have chance to stun them for 2 rounds. Turns to nursing mode afterwards. Nursing mode: Heals 3 allies with the lowest HP percentage, and increase their defense for 2 rounds. Turns to battle mode afterwards.||Effects+20|
|Battle mode: spurts flame towards enemy front line and cause burning effect for 2 rounds. Nursing mode: sprays healing rain on all allies in front line.||Effects+18|
|Battle mode: Release a pillar of fire towards enemies in a row and decreases their defense for 2 rounds. Nursing mode: Heal the ally with the lowest HP percentage and increase his/her rage.||Total effect decreases by 14.5%|
| Battle mode: launch firebomb to deal damage to the enemy with highest rage and reduce his attack damage for 2 rounds.
Nursing mode: shoot fluid that can cause confusion effects, randomly attack one enemy and confuse him (ignore control immunity) for 2 rounds. Confused unit will attack his teammate randomly.
Amazon Hunter · Aria Lockon · Astral Hunter · Blade Spiral · Bombmaster · Crimson Rose · Demon Hunter · Dragon Queen · Frost Heiress · Green Ranger · Grimbow · Night Sentinel · Nightblade · Shadow Stalker · Snow Queen · Time Tracer
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Alyssia · Atalanta · Aurora Blade · Bamboo Fighter · Berserker Claw · Blood Baroness · Dark Mistress · Dark Paladin · Death Slayer · Death Tyrant · Draconia · Earthshaker · Elder Dwarf · Headless Horseman · Hecate · Hell Hound · Jack Hallow · King o' Bones · Mysterious Count · Nether Knight · Rose Knight · Seraphina · Shadowraith · Snow Ryder · Valkyrie · Void Shadow · XO‑403 · Zweihander