Miraak Clone

A clone of Miraak was created by Poet in A Skyrim Tale. It was a clone of the Dragonborn Miraak. He went haywire battling the vampires and attacked Jen, but was killed by Jen, Frea, and Poet.

Vahl
The Miraak clone served under Vahl while battling the vampires with the Dawnguard.

Poet
Poet was the creator of the Miraak clone, but had to put him down in the final battle with the vampires.

Miraak
It was unknown if Miraak and his clone knew each other.