For anyone using Obsidian.md as a Campaign Manager.
You can add DemiPlane character sheets to notes. Use the Custom Frames plugin and setup each character sheet with their URL in the plugin settings. If you name the note the same as the character then everytime you write the name of the character in your notes it can automatically link which means you get hover/click ability to see the characters sheet.
It’s a bit slow to load currently given the early access status but hopefully optimisation will help fix that up at some point.