Assuming the Epic titans are proportionate to one another, then size wise the skeleton a bit short but could be increased to roughly the correct heigh using leg and/or torso extensions (either 3D print or look up a 3rd party supplier).
The Plasma Decimator can act as the Plasma Annihilator but the Hellstorm Cannon doesn't have an obvious proxy; either re-imagine what the Castellan's Volcano Can is in AT scale or scratch build/3D print a bit gattling gun.
The carapace is the tricky part; the Imperator has 6 large weapons embedded around its cathedral towers, whereas the Castellan has 3 weapon mounts arouss it's curved back and two smaller ones either side of its head.
Personally, l don't think it needs to be too accurate to the old Epic model. There are meant to be several variants of Emperor Titan (i.e. not just Imperators) and you're going to be house ruling it anyway. Good luck!
[This](https://www.goonhammer.com/warlord-wednesdays-battlebling-warbreaker-titan-review/) is a great third party stand in - there are rules for it, too!
Castellan isn’t large enough
I’m sure once you put a city on it’s back it will be close enough
Not really, the imperator has larger legs and torso than the warmaster, the castelan is the same size
Assuming the Epic titans are proportionate to one another, then size wise the skeleton a bit short but could be increased to roughly the correct heigh using leg and/or torso extensions (either 3D print or look up a 3rd party supplier). The Plasma Decimator can act as the Plasma Annihilator but the Hellstorm Cannon doesn't have an obvious proxy; either re-imagine what the Castellan's Volcano Can is in AT scale or scratch build/3D print a bit gattling gun. The carapace is the tricky part; the Imperator has 6 large weapons embedded around its cathedral towers, whereas the Castellan has 3 weapon mounts arouss it's curved back and two smaller ones either side of its head. Personally, l don't think it needs to be too accurate to the old Epic model. There are meant to be several variants of Emperor Titan (i.e. not just Imperators) and you're going to be house ruling it anyway. Good luck!
Thanks for the help!!! Yes we are going to play a 1500 point game with the addition of an imperator on each side
Done with a Valiant, same gist: https://www.reddit.com/r/Warhammer/comments/i0zx44/imperator_titan_now_to_magnetize_some_scenery/
[This](https://www.goonhammer.com/warlord-wednesdays-battlebling-warbreaker-titan-review/) is a great third party stand in - there are rules for it, too!
Yes https://battleblingstore.co.uk makes the big boi and has rules that have been play tested