Mecha Zed
So this is a skin idea that many probably already have. So Zed looks like a robot, and his blades are technological (similar look to mecha Aatrox's blade). His eyes are one narrow line like on some robot suits, and his Q throws a circular saw blade. The W sends a machine that makes a hologram, and any abilities cast via shadow also look like a hologram. If Zed swaps with the shadow, then the hologram producing machine turns into the Zed shape, and Zed's previous location turns into the machine. The E obviously spins around, so nothing too different there. The ult using a bunch of the hologram machines and the death mark looks like a target symbol (not the store one) like on guns.