http://img84.imageshack.us/img84/9316/retrodedeus.png

Name: Retrodeus.
Tier: 2 or 3, possibly
Stratum: Levels have a chance of randomly appearing in any stratum regardless of theme, kind of like Graveyard levels.

Attacks

-Third Eye: It opens it's third eye and the screen flashes red temporarily and everyone starts "cowering"- movement speed increased, weapons disabled, and shield nerfed. Is followed by

-Seven Aspects: it shoots seven lasers in the colors of the rainbow from it's third eye, each of which does all three types of "special" damage in a small amount and has a status effect attached to it (the point is dodging, not shielding). Red=Curse, Orange=Fire, Yellow=Stun, Green=Poison, Blue=Frost, Indigo=Shock, Violet=Sleep.

-Stigmata: it slams it's arm down on the arena, causing shock waves of Normal damage to spread forth from it and a series of bright shapes to appear on the floor. Touching these shapes grants a random effect, both beneficial ones and harmful ones. They dissipate after about a few seconds.

-Avatars: Shoots spawns which land onto the arena in monster cages. These spawns will be unique versions of monster families already in the game but with a colorscheme matching that of the boss. They also get hurt by the above three attacks and the boss will feel damage they take, more so if he destroys them himself.

-Glare: He will, having taken enough damage from the self-hurting, bring his head down and start glaring at the Knights/the player while numerous bizarre images appear in his third eye. This will cause the shapes from the Stigmata attack to appear in random places and then turn into explosions. His eyes will start to flicker briefly and when this happens you can hurt him for maximum damage, but you must do so while avoiding shrapnel from the explosions.

When he dies he will be forcefully restrained by the Clockworks itself and pinned to a wall by his "arms", and then he will promptly be sapped of energy and decompose, with his lights dimming until the only thing left running is his Third Eye, which continues to flash bizarre images and static. You must then make your way to the exit with dim emergency lighting and the occasional illumination by an image from the Third Eye