For my tabletops, I usually sketch in the stats and give a broad personality outline, or party role. Last year I ran a heist game, and the characters were built around roles within that milieu. There was a Bruiser, a Wheelman, and a Tech Whiz, among other roles. In my less serious games, I'll just write up whatever sounds fun, and tell players to add anything they think is appropriate, or that they think I've missed.