Rewatching JJ Abrams excellent Alias at the moment, but won't venture into season 5 because it utterly superfluous to requirement*.
Anyway, my favourie character is Jack Bristow, the nice guy more than willing to kill, maim or whatever in cold blood. My girlfriend asked for a bookmark, something with a bear just as I was scribbling a cartoon of Jack.
She didn't like it. Ah well.
*I have always held a theory that They set everything to wrap up for S4, being told after low ratings for the slower S3, 4 would be it.
But then S4 put the jets back on, more people watched and they found themselves lumped with an extra season, no story left to tell, and the two leads having messily broken up after a romance, plus Jennifer Garner pregnant and unable to do much. In all, an inglorious mess, and a poor way to end.