- This minion is summoned when a Hunter uses during the and encounters versus Kel'Thuzad in the Curse of Naxxramas adventure.
- Kel'Thuzad will not attack Mr. Bigglesworth, even if the cat is buffed with taunt.
- He can die due to area of effect damage that Kel'Thuzad's spells unleash.
- Kel'Thuzad will say No! A curse upon you, interloper! when Bigglesworth dies.
- Silencing Bigglesworth causes Kel'Thuzad to forget his fondness for the cat, and he will kill it.
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