Char
From Kerbal Space Program Wiki
Charr is an exoplanet that would have been added to Kerbal Space Program 2. It is the innermost confirmed planet of Debdeb. Little information on its size and properties is known.
Speculation
Charr is an airless "Heat blasted world of iron." Charr is likely rich in iron and other metals, which may make it an excellent body for resource extraction. This may give players an incentive to go to Charr, despite its proximity and likely high temperature and delta-v requirements.