Undyne

Undying Blood: Undyne has advantage on Constitution saving throws/checks.

Intimidating: Undyne has advantage on Intimidation checks.

Unparalleled Strength: Undyne has advantage on Strength saving throws/checks.

True Hero: When Undyne reaches 0 hit points from a being with any evil alignment, she becomes Undyne the Undying.

Mulitattack: Undyne makes two Spear of Justice attacks and makes a Soul Change.

Spear of Justice: Melee Weapon Attack: +9 to hit, reach 5 ft., 1 target. Hit: 7 (1d8 + 5) piercing damage plus 6 (2d6) force damage.

Soul Change: Undyne swipes her spear and a magical beam shoots forth. The target then either becomes petrified unable to move from Undyne, or vice versa. When petrified, they may not be able to move from their spot and can only engage with Undyne.

Magic Spears: Undyne summons up to 15 magic spears and shoots them at whoever she targets. Each spear does 1d4 force damage and have a +9 to hit.

Challenge Undyne: If a person says that Undyne's attacks are too slow, then she gains advantage on her next attack. If a person begs Undyne for mercy, her attacks gain disadvantage for the next attack.

Transform: If Undyne reaches 0 hit points from any evil alignment creature, she may transform into Undyne the Undying.