Achilles Polandwood, frequently called Achi by his companions, serves as the mechanic for the crew of the ship Aurora in the anime Mars Daybreak. He is a male character with green eyes and brown hair that reaches his shoulders. His birthday is April 1. Achi is often seen as having a teenager-like attitude, and at times he may not take things seriously. However, when heavy situations arise, he is always present to ensure the objective is completed. For this reason, he is viewed as an older brother figure to the younger members of the Aurora crew, specifically Junior, Enora, and Gram. He appears in the series as a supporting character.