Sasha Nein

We know from the game that he stresses control and orderliness, so I like to imagine him as a man who's methodical and calculating about approaching a mission. He'll have not only a plan of attack, but multiple contingency plans and fallback scenarios based on his assessment of the junctures in the plan most likely to fail. (Kind of like submitting three proposals to land one miniseries opportunity.)

He's less good at thinking on his feet, but it would be a mistake to assume this means he goes to pieces if his plans all go wrong. After all, Nein is all about control, and to break down in the middle of a mission -- or at any other time, really -- would be an unacceptable loss of control. While Sasha probably wouldn't try to improvise a mission to completion, he'd never let them see him sweat, and his last-ditch approach would be to keep his head, take in as much information on what went wrong and why as he retreated, and fall back to somewhere to rebuild.

If he has a weakness, it's overconfidence brought on by his certainty that every last detail is accounted for. (Witness his surety that brainless Oleander was defeated at the end of Psychonauts, failing to consider that the brain could do damage all by itself.) If he happens to overlook something, it could poke holes in all of his strategies until he'd be forced to go back to the drawing board.

Psychonauts, Sasha Nein, Milla Vodello & Razputin ©2005 Double Fine Productions, Inc. All Rights Reserved
Everything else is mine or Nich's, so just stop already.