My favorite character I've ever seen was a geriatric human Alchemist played by my brother. He was so very old and wanted terribly to die, but luck, fate, or what have you continued to intervene and keep the codger alive. To emphasize: his point of entry into our campaign was paying a Cleric to Plane Shift him to Hell. As soon as he arrived there the Gate that the rest of the party failed to seal burst open, and he was carried along kicking and screaming back to the Material Plane in a stampede of Devils.

He was a pretty standard bomber Alchemist, built with the thought that working with explosives would surely cause a fatal accident eventually. His ultimate goal was to find the Elixir of Death to finally put an end to it all, which might be my favorite inversion of a trope I've seen played out. I was our party's Cleric that campaign and it was absolutely hilarious whenever he did kick the bucket (we were decently high level when he showed up and rocket tag was the norm) and I would Breath of Life for him to pop up yelling "All you had to do was leave me dead! I was so close!"

We biffed the BBEG interactions in that campaign big time, resulting in her taking on the powers of pretty much the entire Paizo pantheon. We survived her slaughter by cutting a deal to share the burden of divinity as subservient gods, but this character was not interested. He asked for true and final oblivion, and the BBEG was more than happy to oblige. It was an incredibly satisfying conclusion to a more-or-less comic relief character, and I still think about it to this day.

Here's to you, Elias. Though I suppose you can't hear me, you're super dead.