Little mini theory for you as we wrap up Yak to Basics.
Tim, the warrior guy we see in the current Yak track and made famous through tons of old promo material for the game, is actually a Tryas Guard gone made.
Why Tyras?
Well obviously there's the resemblance with his helmet- he's got the same red mohawk-like mane on his helmet as can be found on the knights serving King Tyras in Isafdar. On top of that, if we remember back to the story of Tyras- he took his knights from West Ardougne through the Underground Pass west of Ardougne to explore the western lands of the elves.
On the way through the Underground pass, you can encounter many horrors concocted by Iban, the so-called son of Zamorak.
Most notably, heaps of undead and soulless beings.
See where I'm going?
So here's my head canon hypothesis if you will, King Tyras takes a brave number of his knights through the path, but on Knight- Tim, gets left behind, unable to get past Iban to the well of journey to rejoin his brothers in the west, and unable to get back out through to the East (perhaps even being barricaded back in by the mourners or Lathas's men who wanted to take over West Ardougne). Instead Tim was forced to camp out in the pass, doing his best to repair/replace bits of his arrmour with more ancient scraps he found in the pass.
Alone and trapped, Tim started to go mad. There, he found an animated skeleton that unlike the other undead he encountered, was "defective" and had no interest in killing the living. Tim befriended this skeleton and he became his one friend, until he started to hallucinate the "Crunchy" as he named him, was talking back to him.
But Tim still could not escape, until eventually he reached enlightenment, and realized that he was just living a script someone else had written out for him. No, not a plot conceived by Tyras, or Lathas for domination. A Javascript.
Tim then managed to escape by going, Behind the Scenes, and took Crunchy with him.
"We call it being a hero"