My pick this time around is Solid Snake. Besides having never played Splinter Cell, Snake had been a critically acclaimed character in video gaming, to the point where he was mentioned in discussions regarding the best character in the history of video games. If that's not enough, he's a top-level spy, special operations soldier, and he goes through with every act and mission alone; only contact with his allies through radio. Quite the courageous character!
Sam Fisher is an expert in espionage techniques and various infiltration tactics, as well as being well informed in topics like face-to-face combat, surveillance, and can use any two weapons ambidextrously. A well fit soldier and definitely a solid video game character, but I edge Snake over him for being the more established in his role.