Short answer: No, can't be done; if you're talking about the D&D 5E by Roll20 character sheet. Long answer: 1. In general, yes, but not easily. Something using the charactermancer? Extremly hard. 2. If talking about the 5E sheet, it's basicly impossible, bc the we don't have access to the sourcecode to the latest 5E sheet, so creating a sheet with extra features based on some 2 year old sourcecode is in for a bad time. 3. Make a post in this same subforum, along with making a reply to the Sheet Request thread. Reading and answering some of these questions will make it easier for potiential sheet authors to right away get a fairly solid idea of what you want <a href="https://wiki.roll20.net/Sheet_Requests#How_to_make_things_easier_for_Sheet_Authors" rel="nofollow">https://wiki.roll20.net/Sheet_Requests#How_to_make_things_easier_for_Sheet_Authors</a>