Thermal-EX is a fictional character from Arknights, a tactical mobile game with anime-style character design. He is a member of Rhodes Island and functions as an operator associated with engineering and battlefield support. Thermal-EX is portrayed as a specialized unit rather than a deeply central story character, often appearing in side content, gameplay systems, or event-related material. His role emphasizes utility, technical expertise, and support capabilities within the organization, contributing to Rhodes Island’s operations through specialized functions.