Polandwood, Achilles

Achilles, or Achi as the crew prefers to call him, works as a mechanic on Aurora's ship. To some (if not all), he is seen as having a teenager-like attitude, meaning he may not always take things seriously. However, when serious situations arise, he will always be there to ensure the objective is completed.
For this reason, he can also be viewed as an "oni-chan" (brother) figure to the young members of the Aurora: Junior, Enora, and Gram.