Mr. Bigglesworth

Sanctum of Domination=

• -| Naxxramas=

Mr. Bigglesworth is the pet house cat of Kel'Thuzad. According to Eligor Dawnbringer, Bigglesworth was the last living creature in Kel'Thuzad's citadel Naxxramas and was said to be the last thread connecting Kel'Thuzad to his mortal life.

Mr. Bigglesworth can be found wandering just inside the entrance to the Naxxramas raid as a level 5 house cat. Killing him causes Kel'Thuzad to yell:

• yell

He'll periodically attack the maggots and roaches that meander around the room. Contrary to rumors spread by some players, killing him has no effect whatsoever on any aspect of the instance.

The Lil' K.T. vanity pet will kill this version of Mr. Bigglesworth, despite the irony of the situation.

Bigglesworth's soul accompanied his master to the Shadowlands and appears in the Sanctum of Domination as a slime cat. He is involved in the raid achievement Together Forever. To complete this achievement, players must first find and pet him in both of his hiding spots (after being pet each time, he'll run off deeper into the sanctum and despawn):

• 1) Among several Ashen Phylacteries in the northeasternmost corner of the Shadowsteel Foundry
• 2) Behind a crate in the Torment Chambers

He'll subsequently spawn in Kel'Thuzad's room, the Throne of the Damned, where the player can use an extra action button to place him on their head. In the second stage of Kel'Thuzad's encounter, "The Phylactery Opens", the player carrying Bigglesworth needs to enter the Phylactery and use the extra action button to put him on the ground next to the Remnant of Kel'Thuzad. This will give the Remnant the buff, increasing his damage done by 500% for the rest of the encounter. Completing the encounter with this buff active rewards the achievement.

• A Spectral Cat with Bigglesworth's appearance can be found outside the Hall of Sorcery in Maldraxxus. It's unclear how this relates to Mr. Bigglesworth's appearance in the Sanctum of Domination.
• The slime cat Mr. Jigglesworth's name is a reference to Bigglesworth.
• Mr. Bigglesworth is also the name of cat in the film series.
• Despite being described as the last living creature in Naxxramas by Eligor Dawnbringer, the Mr. Bigglesworth (companion) battle pet is classified as undead.
• Mr. Bigglesworth has a few appearances in Hearthstone, generally secret ones.
• If a hunter uses the HS Animal Companion spell during the final fight with Kel'Thuzad in the Curse of Naxxramas adventure, they will HS Mr. Bigglesworth (summon Mr. Bigglesworth) instead of one of the three usual minions (Huffer, Misha or Leokk).
• Bigglesworth was also originally planned to be a legendary collectible card in the set.
• If a player summons 6 cats while they control HS Headmaster Kel'Thuzad, HS Mr. Bigglesworth (Scholomance Academy) (Mr. Bigglesworth) will be added to their hand.
• HS Mr. Bigglesworth (Battlegrounds) (Mr. Bigglesworth) appears as a playable hero in HS Battlegrounds mode.
• The slime cat version of Bigglesworth makes a cameo appearance in HS Kel'Thuzad, the Inevitable's card art.
• In Jaina's story in the HS Book of Heroes, Antonidas uses a minion named HS Assistant Bigglesworth, a gnome. It's not known if this is meant to be the same Bigglesworth.
• Mr. Bigglesworth appears in Heroes of the Storm as part of Kel'Thuzad's dance animation. His meowing can be heard in the background of one of Kel'Thuzad's poke quotes, in which the lich tells him: "Oh no, don't you worry, Mr. Bigglesworth! I won't let anyone harm you this time!"
• Early on in development, Kel'Thuzad had a talent which allowed him to summon Bigglesworth as a controllable pet with a spell power aura. Another idea was that Bigglesworth would be a scout unit that would run away if attacked, enraging Kel'Thuzad and granting him a huge damage buff for a short amount of time. The ideas were scrapped because it felt tedious to have to constantly maneuver a pet while trying to land Kel'Thuzad's ability combos.

• Image of Mr. Bigglesworth

• Naxxramas

• Sanctum of Domination