Altair

Shapechanger. The werewolf can use its action to polymorph into a wolf-humanoid hybrid or into a wolf, or back into its true form, which is humanoid. Its statistics, other than its AC, are the same in each form. Any equipment it is wearing or carrying isn't transformed. It reverts to its true form if it dies.

Keen Hearing and Smell. The werewolf has advantage on Wisdom (Perception) checks that rely on hearing or smell.

Hatred of Calabad. Because of their shared past, Altair hates Calabad. Will gain an additional 2d6 of damage (both magical and physical) when attacking Calabad.

Multiattack. (Humanoid or Hybrid Form Only). The werewolf makes two attacks: two with its spear (humanoid form) or one with its bite and one with its claws (hybrid form).

Bite (Wolf or Hybrid Form Only). Melee Weapon Attack: +4 to hit, reach 5 ft., one target. Hit: 6 (1d8 + 2) piercing damage. If the target is a humanoid, it must succeed on a DC 12 Constitution saving throw or be cursed with werewolf lycanthropy.

Claws. (Hybrid Form Only). Melee Weapon Attack: +4 to hit, reach 5 ft., one creature. Hit: 7 (2d4 + 2) slashing damage.

Vicious Warhammer (Humanoid Form Only). Melee or Ranged Weapon Attack: +4 to hit, reach 8 ft. or range 20/60 ft., one creature. Hit: 7 (1d10 + 7) bludgeoning damage, or 6 (1d8 + 2) bludgeoning damage if used with two hands to make a melee attack.

Spell Attacks.

Cantrip (at will): Toll the Dead, Sacred Flame, [Tooltip Not Found]

1st Level (3 slots): Cure Wounds, Inflict Wounds, Shield of Faith

2nd level (3 slots): Prayer of Healing, Spiritual Weapon

3rd level (2 slots): Spirit Guardians, [Tooltip Not Found]

5th level (2 slot): Dawn, Insect Plague

Retribution. Anytime attacked directly by Calabad, Altair recieves an attack of opportunity no matter where he is on the field and can retreat to safety without being attacked.