These are old Ral Partha Demolisher tanks from the original FASA BattleTech miniatures range. Back in the day, when I was young, I bought one, which despite my best efforts to shed stuff over the years I still have. It's the one at the back.
Over the past few years I acquired two more, which were originally bought to be turned into cybertanks for Ogre/GEV. But I have a shed ton of Ogre cybertanks, so they've become surplus to requirements.
Since then, I've been of two minds about what to do with them.
As a BattleTech tank, it really is way too big to use, if you agree that the battlemech models are accurate 1/300th scale representations. If on the other hand, like me, you're in the habit of using the Dark Age Mech Warrior infantry for your BattleTech games, because they look better, then these Demolishers do look the business.
They would also make a reasonable 15mm, nominal 1/100th scale tanks too. So, decisions, decisions.
After much thought, I've decided to use them as part of my ongoing Bad Dog project, as I want some tank to support my Chinese All Terrain Suits, and I've given them the designation ZTZ-169C. I think that the Demolisher looks pretty good next to these Chinese All Terrain Suits I made. Big without being too big, and one can rationalize the treads as independent electric drive units.
So time to strip the two partly painted models and reassemble them.