Caleb
From Melvor Idle
Caleb is a pet that can be received from completing the Stronghold of Magic (Superior) with a 1/250 chance. It provides a permanent bonus of +2% Damage To Slayer Tasks.
To challenge the Superior version of the stronghold, you must first equip all 3 of the Augmented Magic enhancements, and to challenge the Augmented version, you must first equip all 3 of the regular Magic enhancements.