The Jacks were first found in the Mirror Image when Alice wandered through the interiors of the funhouse. Throughout the mirrors and broken glass, she eventually came in contact with them and these became useful against new enemies in the area.
The Jacks take on the appearance of regular playing jacks, being red in color rather than chrome. The only difference is that Alice's Jacks have two sharpened arms to deal extra damage towards her enemies. The attack also included a red bouncy ball which directed where the Jacks must go.