It's not 100% mine in its strict sense, since the monster is ID's intellectual property (they designed it) and the sprite was painted over them model rips from Qdoom (which were previously scaled down) so that the animations are true to those of the original monster. However, nothing of the base model rip remains...
It was additionally Doom-palletted, since that was my target color range.
Note - when putting it into the wad try to make the center of the monster align with the Y axis, so the torso/head remains in the center, as auto aligning may offset the sprite too much to left/right.
Now go wicked with coding it, mates
Oh and btw, this thing took ages to make...but the satisfaction is rewarding
I pretty much thought it'd fire a single projectile or something like that. But anyone willing to write a Decorate entry for it, be my guest, and go wild with ideas! 
