Blood Blockade Battlefront - Kekkai Sensen Wiki
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Gilbert F. Altstein (ギルベルト・F・アルトシュタイン, Giruberuto F Arutoshutain) is Klaus' butler and member of Libra. His face is covered with bandages, making him appear similar to a mummy. He is known for being a famous combat butler, and has regenerative powers. He drives a custom vehicle with many weapons, and is very fierce despite his even demeanor. Handles most of Libra's intelligence work.

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