There's a sheet request thread at the top of the forum. You can play any game in roll20 without a character sheet. The Attributes and Abilities tabs lets you set up attributes, skill values, etc, and the abilities tab lets you create specific macros to use those attributes for attack rolls, spells, etc. Long ago, before roll20 had the character sheet feature, thats how we all played. It's not pretty, but it gets the job done and requires very little programming ability.