Achim had a tall and muscular build with fair skin and long pointy ears. He had purple shoulder-length hair with sideswept bangs worn in a low ponytail. He had dark yellow-orange eyes with slit pupils.
Achim's attire was a white loose shirt with long sleeves tucked into loose dark purple high-waisted pants, which in turn are tucked into black knee-high boots. He wore a silver ring on his right ring finger.