Number 1: Christian
Christian is an obvious choice by most wrestling fans. Chris Jericho and Christian have teamed up together before, forming what they called Vitamin C.
I could see this happening, but Christian does have a match, probably earlier in the night against Tommy Dreamer for the ECW Championship.
Number 2: Chris Masters
I have heard Chris Masters re-signed with WWE quite some time ago; he just hasn't made his debut yet.
This would be the right time and quite an impact if he were to make his return debut at Night of Champions teaming up with Chris Jericho.
Number 3: Kane
Kane is what Chris Jericho is looking for. Someone who is unstoppable. Kane had previous altercations and feuds with Rey Mysterio.
Another person who might fit in with Kane in the same matter is Mike Knox. He has had a feud with Rey Mysterio and he too is unstoppable.
Number 4: Ted DiBiase
I could actually see this happening. As Cody Rhodes turned on Hardcore Holly at Night of Champions, I could see Ted DiBiase turning on Cody Rhodes.
The only problem with that is Ted DiBiase is said to be turning face in the coming months. This could help his turn though.
Number 5: Jack Swagger
I am throwing this one out here because I think that Jack needs another title run, and with someone like Chris Jericho, it would just improve Jack Swagger even more than he already is.