There is a story behind this character, and he is a big part of my current campaign.
he came from another plane, and used to be a clockwork mastermind, building inevitables and fixing clocktowers.
eventually he settled down and fell in love with a young girl from the material plane.
unfortunately his kind have incredible life spans, and although a long relationship he had with this woman, she eventually died of old age....
it drove the clock maker to madness, unending grief he felt for the love of his life, that he would be plagued with old age.
he devoted his life to inventing, so that he would spare others the grief he endured.
in his final days he reached a break through, a technology that could turn oneself into an inevitable, but it came with a catch...
it meant replacing your heart for a clock, as linear as time is, the one thing that would never stop ticking was this mechanical device.
he used it on himself and now he wanders the lands, a cold empty shell of his warmer days.
far past sanity, he searches for the woman who is already dead, and feels nothing.
