Huge beast, unaligned
Armor Class 15 (Crab Chitin)
Hit Points 90 (12d12 + 12)
Speed 0 ft., swim 60 ft.
STR 19 (+4), DEX 10 (+0), CON 13 (+1), INT 3 (-4), WIS 12 (+1), CHA 7 (-2)
Saving Throws WIS +3
Skills Perception +4
Condition Immunities Charmed, Frightened
Senses Blindsight 120 ft., Passive Perception 14
Languages Aquan -- cannot speak, read or write
Challenge 4 (1,100 XP)
Echolocation. The whale can't use its blindsight while deafened.
Hold Breath. The whale can hold its breath for 30 minutes.
Keen Hearing. The whale has advantage on Wisdom (Perception) checks that rely on hearing.
Bonded. Will is bonded to Setesh Anemos Trask. He understands what Anemos want without needing to be told and does everything in his power to do that regardless of the consequences. Anemos and Will can sense each other's location anywhere on the same plane.
Gets It. Will wants Anemos to look as impressive as possible at all times.
Bite. Melee Weapon Attack: +7 to hit, reach 5 ft., one target. Hit: 21 (5d6 + 4) piercing damage.
Familiar (1/day). Anemos can force Caleb's familiar to merge with Will. For one hour Will and Anemos are treated as master and familiar as per the Find Familiar spell. Caleb may not use or summon his familiar during his time.
Shared Wrath. If Will is damaged by an enemy he can trigger Anemos Wrath of the Storm abilility
Setesh Anemos Trask III seized Killer Will from the Fanged Maw sahuagin army. He spent many days training with it before casting a ritual to make him his bonded mount. This required slaying a Huge Giant Crab and performing rituals over two days with this ally Caleb Beltorc. To complete the rituals, he sacrificed a giant topaz pearl, a powerful war horse and part of Caleb's familiar. He forced many priests to participate. Uisce was pleased and Byron Kelvin Joy delivered her blessing. This has made the bond with Killer Will extremely powerful. He cannot be turned against his master.