Here are links to all the available Resident Evil related content for Gmod 10! This list will be updated as new models are released ;)

Leon Kennedy RPD (PC, even has my hair texture XD):
http://www.garrysmod.org/downloads/?a=view&id=19383

Leon Kennedy with Jacket (PC):
http://www.garrysmod.org/downloads/?a=view&id=17628

Leon Kennedy with Jacket (GC Rip):
http://darkmatter.de-coder.net/index.php?showtopic=406

Leon Kennedy with Jacket (GC Rip, Handgun still attached):
http://darkmatter.de-coder.net/index.php?showtopic=406

RPD 09 (Head Hack, Faceposable):
http://www.garrysmod.org/downloads/?a=view&id=19879

Ada Wong (GC Rip, Red Dress):
http://files.filefront.com/AdaWong+RedDress+RE4/;10152946;/fileinfo.html

Ashley Graham (GC Rip):
http://files.filefront.com/ashley+skoolgalzip/;13439802;/fileinfo.html

Jack Krauser (PC, comes with hat):
http://www.garrysmod.org/downloads/?a=view&id=19936

Verdugo (GC Rip):
*MarioKart64n doesn't seem to have this anymore I will upload it later.

El Gigante (PC):
http://www.garrysmod.org/downloads/?a=view&id=18320

Luis Sera (PC):
http://www.garrysmod.org/downloads/?a=view&id=17841

Dr. Salvador & all 3 chainsaws (PC):
http://www.garrysmod.org/downloads/?a=view&id=18483

Dr. Salvador (GC Rip, Chainsaw still attached):
http://forums.facepunchstudios.com/showthread.php?t=345908

Regenerator (PC):
http://www.garrysmod.org/downloads/?a=view&id=17455

J.J. (PC, J.J. is the big Ganado with gatling gun):
http://www.garrysmod.org/downloads/?a=view&id=18206

The Merchant (PC):
http://www.garrysmod.org/downloads/?a=view&id=17783

Hunk & Hunk's TMP (PC, "Id" gun model):
http://www.garrysmod.org/downloads/?a=view&id=17639

Armored Garrador (PC):
http://www.garrysmod.org/downloads/?a=view&id=18005

Resident Evil 4 Villager (PC, first one you see):
http://www.garrysmod.org/downloads/?a=view&id=17906

Claire Redfield (From Code Veronica X)
*MarioKart64n doesn't seem to have this anymore I will upload it later.

Rebecca Chambers (GC Rip, RE0 I think)
*MarioKart64n doesn't seem to have this anymore I will upload it later.

Zombie NPC:
http://www.garrysmod.org/downloads/?a=view&id=19566

High Resolution RPD officer & Umbrella Ayane:
http://www.garrysmod.org/downloads/?a=view&id=20211

Resident Evil 4 Weapons Pack (PC, "Id" models):
http://www.garrysmod.org/downloads/?a=view&id=16747

If you find more stuff, please let me know!