|Invented by||Hubert J. Farnsworth|
|Purpose of invention||Accidentally created|
|First appearance||Bender's Game|
- The Anti-Backwards Crystal is a geometric solid known as a regular Dodecahedron (twelve faces, twenty vertices, thirty edges). The other crystal is a regular Icosahedron (twenty faces, twelve vertices, thirty edges). The Dodecahedron and Icosahedron are mathematical duals; each face of one corresponds to a vertex of the other.