He has a secret that only few know. He is being watched, always, unseen,unheard. This secret is on the priority of global security. If only he knew what he was truely, what his secret is.
Created in a time of need, he was cast from the pride he was made to obtain, he is a warrior, and a leader.
A once noble man, he was tossed aside and tortured. He is an empty shell of what use to be Human.
A wonderer, a warrior. He is both cursed and blessed, he is feared and loved, but always misundestood.
On a location with numerous webs, and at least one big spider, there is a something inside a cocoon. It is humanoid in shape, still moving. If the heroes free it (not before they kill or drive away the spiders), they meet a ... zombie!
The poor zombie wandered the dungeon alone, and tried to kill a big living creature (= a spider). The spider used the usual treatment, even if this victim did not look tasty. The zombie can be easily killed as any other zombie. It got but several doses of spider-poison, so can be something worth if it is extracted. You can mention to a druid or ranger the fact the spider had no poison anymore.