Although odd, this titan is actually within 40k lore. It is described as a tripodal titan carrying 2 underslung plasma annihilators & 2 twin-linked tezlan accelerators. It is between reaver & warlord size & was lost after the horus heresy. You can fit other heavy titan weapons to the weapon mounts.
Liek titans, so do I, that's why I'm here, to design more parts for warhammer titans. I also sometimes do knight parts. If you have any suggestions feel free to ask me in the messages thingy.