go to http://callofduty.wikia.com/wiki/Callsigns
Callsigns give you a little Phrase and picture above your Name for online play. http://callofduty.wikia.com/wiki/Callsigns
http://callofduty.wikia.com/wiki/Callsigns
lions and tigers
All of the callsigns are here http://callofduty.wikia.com/wiki/Callsigns
Knight of the Dragon is cool.
There is a call of duty wikia page, google for: Modern Warfare 2 Callsign WikiaAnd it should be the first result.It has a list of all the titles and emblems, and how to get them.here i got you a link of the full list of titles and how to get themincluding what the titles mean for example FNG title means fuc*ing new guyhttp://callofduty.wikia.com/wiki/Callsigns/Titles = titlesand if you need it here's the emblemshttp://callofduty.wikia.com/wiki/Callsigns/Emblems
no you don't. you lose everything except for your callsigns and emblems so its just like starting from level 1 again. its still worth going prestige though as you unlock more challenges to give you more callsigns and emblems.
http://callofduty.wikia.com/wiki/Callsigns
callofduty.wikia.com/wiki/Callsigns :D
Titles: see related linkhttp://callofduty.wikia.com/wiki/Callsigns/Modern_Warfare_2_Titles this was added as a linkEmblems: see related linkhttp://callofduty.wikia.com/wiki/Callsigns/Modern_Warfare_2_Emblems this was added as a link
Spyro, Raign of Fire, Dragon Rage. Knight Of The Dragon by gamevial is cool, too.