Living Harmony AU relevant character sheets/info:
Harmony aka the "Tree of Harmony"
Stygian
Somnambula
Starswirl the Bearded
Shadow Lock is actually an official canon character from the IDW comics No. 51-53 and I really enjoyed his mini arc introduction enough to include him as a more significant part of my "Living Harmony" MLP AU animation project. When I found out he's a direct descendant of Stygian, one of the Pillars of Equestria, I had to find a way to work him in and give him a bit of an updated design to fit more into my story setting I have planned. My good friend Ori helped vector my finalized concept redesign in the very top image.
Listed below is some character and story context for these sketches provided by my myself and Ori who's been a huge help in fleshing out the world building with this cast of characters I'm using in this AU so far. Shadow Lock's main abilities and canon backstory are expanded upon and/or flavored a bit differently here as well.
Stygian’s distant descendant, the last living branch in his family tree
Lives alone in his family’s castle after they retired to the town of Somnambula
Temporary antagonist to the mane 6 that stems from a fear of the Pony of Shadows returning to plague Equestria
Believed he was descended from a monster and desperately tried to erase any mention of the Pony of Shadows from written history
Was talked down from his history erasing spree by Twilight and ends up traveling around Equestria to find more info on the Pony of Shadows, without trying to erase the knowledge this time, and prevent it from returning
The symbol on the front of Shadow Lock’s cloak is his family crest that dates back to Stygian's time period.
There’s a glamor woven into Shadow Lock’s cloak that enshrouds its wearer’s face.
Shadow Lock’s special talent is the concealment and binding of dark magic. He can effectively bind malevolent “spirits” into vessels where they’re unable to cause harm. This can also be reversed as an unbinding spell. ("spirits" in this context are more like a culmination of lingering, concentrated dark magic that takes on a will of its own)
His family castle used to be quite “haunted”. It’s quieter nowadays, but he does have a large collection of miscellaneous items that most ponies would consider “cursed…”
Always carries a healthy stack of books on his person to read and use as a weapon. His spells can pull fictional characters and monsters from stories to fight for him
Created a spell that can trap a creature into experiencing a historical event on loop by using a small amount of written text. The spell can be broken by doing something significant enough that did not occur during the looped event in history.
Shadow Lock and Stygian are extremely hesitant to meet each other at first in present time. The mane 6 and Harmony step in as mediator eventually to help them work out their issues so they can reconnect as family
Much later in the story, Shadow Lock invites Stygian to live in his castle once their family relationship is repaired, the two becoming inseparable