my venue is having a Lord of the rings event and we are also allowed to play medieval looking characters like the chase Kal, or SR Wonder woman. You guys know of any others like these?

Chase Kal
SR Wonder Woman
Jason Blood
Ares
Green Arrow
Asgardians
1/2 of Indy

Purifiers look a bit monkish to me, also Jason Blood and Demon AE's from B&B.

And every Green arrow looks an awful lot like Robin Hood.

Updated with Ares, and yeah, jason is perfect, green arrow too

I don't know if they are considdered mideval but asgaurdians

From Indy:
Magdalena
Arwyn
Wulf Sternhammer

Amazons from B&B, Shining Knight from JL, Valkyrie from Sinister, most of the Asgardians from Hot (or the fast forces), Swordsman from Sinister, Fin Fang Foom (dragons are medieval, right?)

How about the original Mutant Apocolyspe?

Or the time travelers, Cable, Rip Hunter and etc...

GSX Lockheed (dragon), GSX Hulk (knight)...

SR Wolverine from GSX looks vaguely like he's wearing armor
Skaar
The Aquaman from JL
Anyone with the "Asgardian" KW

Bron

Nightmaster

most Asgardians

Amazons, Hercules, Venus, and Pluto should probably all count if Ares does