Shiro

Shiro is one of the most powerful beings we've seen, Excellion's sibling, a regalia wielder, and a son of Genesis.

Appearance
Shiro looks like a normal human with platinum white hair wearing high boots and a long coat.

He has a regalia on his left eye.

Excellion
Shiro is Excellion's little brother.

Kosmos
It is also known Shiro has a very good relationship with Kosmos.

The Monado
Shiro's main weapon, an artifact of Genesis capable of manipulating the very fabric of reality, ether.

It can cut through pretty much anything its user wants to and can be used to provoke several effects.

Monado Arts
Shiro has developed several techniques dependant on the Monado's power

Monado Buster:
The symbol is 斬 “to slash (a living being)”, the blade of the Monado extends for a long distance hit, it inflicts deadly damage and may even one hit kill if you receive a full power complete hit. Instant kill to mechanic creatures.

Monado Enchant:
The symbol is 機 “machine”, it slightly boosts the damage of all allies and gives their weapons the ability to cut through any metal.

Monado Shield:
The symbol is 盾, literally "shield". Shiro creates a barrier around one or more targets that can completely nullify the effects and damage of any ability that hits the shield.

It will deactivate after the shield is hit once by an ability.

Monado Speed:
The symbol is 疾 “speed”, it gives an insane agility boost to the target, to the level of beings like Tael.

Monado Purge:
The symbol is 破 "destroy", it basically "silences" an enemy, it also serves to literally purge someone of harmful effects. Both of these effects have limited duration that ranges from 1 minute to 10 minutes.It's possible to re-use purge to keep the effect alive before it ends.

True Vision
Shiro can access true vision, a form of foresight over all other forms of foresight, this means what Shiro foresees includes results from other people seeing the future with lower forms of foresight. It can see anywhere he wants at any point in time, forwards or backwards. Of course, Shiro needs to know what location and time he's going to start searching from.

Trivia

 * Even though he has been granted foresight by his Regalia, he could not predict Lucisfear's arrival.