Gaster

Gaster unlike his Undertale counterpart doesn't fall in the core and he wears scientist suit with the chest saying smartest.

Attacks
Hands: He can make hand with magic each hand does some thing different: Red hands shoots beams or blasts, Blue hands: change the gravity of people, Cyan hands: Makes it where people attacks are pointless, Purple hands: Makes clones of him or attacks, Orange hands: Makes him 50x stronger than Undyne, Green hands: Heals anyone or anything and can makes a shield, Yellow hands: Shoots a slash at enemy.

Big hands: He can make big hands with magic each big hand does some thing different: Rainbow hands: Does the same as all the small 7 hands, Corrupt hands: Corrupts a person soul or mind, Pink hand: Can control space, time, and reality for a short time.

Gaster Blaster: Just a normal Gaster Blaster.

Blue Blaster: A blue Gaster Blaster.

Orange Blaster: A orange Gaster Blaster.

Omega Blaster: A purple Gaster Blaster that is 100x bigger than a normal Gaster Blaster.

Ultra Omega Blaster: 1,000x bigger than a normal Gaster Blaster.

Omega Sword: A sword 50x stronger than Undyne.

Omega Gun: A gun that shoots bullet that is 100,000x stronger than Undyne the Undying.

Fun facts

 * He's bisexual
 * Gaster really don't like Undyne
 * His soul is a mix of black and white