Thief's Cloak (plural: Thieves' Cloaks) are dropped when you defeat Gloom Thieves. It is also possible to request friends send them to you when attempting to craft a Gloom Thief Morpher in the Beastie Laboratory.
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Thief's Cloak (plural: Thieves' Cloaks) are dropped when you defeat Gloom Thieves. It is also possible to request friends send them to you when attempting to craft a Gloom Thief Morpher in the Beastie Laboratory.