Backstory (not canon):
After GDI released their new Mammoth MKIIIs in the Third Tiberium War, the Brotherhood of Nod knew they needed a proper counter to it. Many designs were considered, among them a vehicle similar to both the Mammoth MKI and MKIII tanks - but vastly superior in armament. After much debate, the Brotherhood decided instead to go for the Avatar walker, primarily due to it's ability to gain additional weaponry - and due to the fear factor. The prototype Overlord tanks were relegated to internal defense duty, never being put in to full production.

Armament:
- 2 high-explosive heavy cannons
- 2 fast-firing autocannons
- 2 miniguns on a separate turret
- a rear-mount defensive turret (guns are broken, reason unknown)
- 4 AG missiles
- two banks of countermeasures (yes, really)
- 3000HP on nearly ALL components
- scary-ness from the Scorpion-derived Nod paintjob. It will scar your victims for life.

Notes:
Yes, I’ll make a ‘lite’ version for easier mobile use.
Yes, the main guns are meant to fire in that succession.
Yes, I’ll build some new Overlord-class frigates based on this thing.
Yes, I know the minigun turret can be... wobbly.
No, I won’t make one with a GDI paintjob. Getting that scorpion’s tail right was hard enough. Then again, I put up with over-a-thousand-part gearbox tractors before, so...... MAMMOTH REPLICA, HERE I COME!