Have some runners that may be coming up against these monsters and am trying to put some togather. Should I view them to be a form of cyber zombie or just the results of delta clinics? Also as they are in service to an Immortal elf what kind of magic could/should I have ancored to their cybernetic bodies? I was thinking Armor but not sure what else. Any suggestions?

Back in the day I used a mix of high end adepts and humanoid drones.
For 4th edition I might go Delta enhanced Adepts and a few mid or high force Plasteel Homunculus (Street Magic pg.87).

Edit: Vibro axes/swords, top of the line firearms, military grade armor and riot shield with custom look (medieval).

Small unit of highly trained and equipped special forces, toss the book at em. Tac Net's, anchored spells, drones. I mean hell Snowdonia should have some cash to toss around.

Beta or Delta, combined with a Suite and Adapsin (additional 20% off), gets your cyber-essence cost down through the floor (cyber at 50% or 30% listed essence cost FTW). Full borg conversion for less than 3 points of essence and some synaptic accelerators on top? Why yes, please

My recollection of the Snowdonian Knights was that they rolled powered armor, rather than full cyber, though. Grab the milspec armor, modify it to be frightening (i think there was a thread about doing this recently), and go to town.