Aggressive.

Zelroth can make three attacks per turn. One with bite and two with his Greataxe.

Fire Fiend

Zelroth Can cast Hellish Rebuke, Fireball, or Fire shield up to 3 times per combat encounter.

Orc Born

Zelroth was born an orc and died an o. Upon his death, he was granted the power of a lesser demon and sent back to the mortal plain to do as his master bid.

Greataxe. Melee Weapon Attack: +10 to hit, reach 10 ft., one target. Hit: 9 (1d12 + 15) slashing damage.

Bite. Melee or Ranged Weapon Attack: +5 to hit, reach 5 ft., one target. Hit: 6 (2d12 + 20) piercing damage.

Underworlds Champion

Zelroth imbues his Greataxe with fiendish magic allowing him to deal an additional 1d12 fire damage on hit for two complete rounds.

Teleporter

Zelroth may teleport up to 500 feet in any direction toward an enemy combatant five times per encounter.

Grèzun's Harbinger

If Zelroth is hit by a targeted attack (ranged, melee, or spell), he may call upon Grèzun to protect him from all damage until the end of his next turn. This can be done once as a reaction when attacked per combat encounter.

Grèzun's Pet

Zelroth is imbued with supernatural energy healing for 3d12+8 health. He can do this once per round as a reaction to being attacked or damaged.

Zelroth may use three legendary actions per round. Choose from the below options.

Whirlwind

Zelroth performs a massive spinning attack with his great axe cleaving through enemy combatants within a ten-foot circle for 5d6 slashing damage on a failed dex save. Half damage on a successful dex save. Save DC:17

Weird Mind

Zelroth enters the minds of his foes, and either causes the feared or charmed condition. This affects all within 30 feet of himself and lasts until their next turn starts. This does not affect an individual if they are successful on a Wisdom save. Save DC:15

Natural Barrier

Zelroth hardens his natural hide skin, resulting in a +3 to his AC till the start of his next turn.