Identities of Limbus Company Sinners extracted from mirror worlds where they joined MultiCrack Office, an office of Fixers that exclusively employ prosthesis users. The Office first appears in the second Intervallo of Canto VI.

They originate from the cold North section of the City and wear red jackets over white coats and black mouth masks. Standard-issue prosthetics for their Fixers include mechanical arms. High-ranking members tend to have four arms, often at least dual wielding and sometimes quadruple wielding in battle, with their weapons of choices being glaives or zweihanders to demonstrate how much stronger their arms are than human ones.

• Faust's identity is based off of Sasha.
• Heathcliff's identity is based off an unnamed MultiCrack Fixer the Sinners meet at the WARP train platform.

Playable Identities:

• Danbooru post #7974839: Multicrack Office Rep Faust (000)
• Danbooru post #7974763: Multicrack Office Fixer Heathcliff (00)