Revenant/Doom 3

The Revenant in Doom 3 keeps the concept of a missile launching-armored-walking skeleton, but a nearly transparent skin was added to the arms and legs, making it look a bit more ghostly. It moves a lot slower than the original, walking instead of running, but it is also much more aggressive as a result, often firing both of its shoulder-mounted launchers at once.

Its missiles travel in rather confusing patterns, making it less straightforward to hit them, but if players use the Plasma Gun against the Revenant, it is usually rather easy to blast the missiles and damage the Revenant with a single volley.