Unleashed upon the world in 1997, the Krogoth was and still is the absolute badass of the RTS world. There has never been more of a walking GG I WIN death machine since. Letting your opponent build one of these is probably the biggest fuck up a person can make, second only to installing AOL onto your computer.
I like to think the Core designed the Krogoth to compensate for their extremely small manhoods.
The Krogoth was the Core's special unit in the old school RTS, Total Annihilation, Core expansion. This mofo had an exploding artillery cannon on each arm , two extremely long range homming missile launchers on it's back, and a giant freaking eye laser. All of which could target different things, meaning this guy shot at 5 targets at a time. By far the most badass OP unit in RTS history.
It could even kill a few Marauders.