In this online seminar, we introduce SuperTwin, a product of the SparCity initiative supported by EuroHPC-JU. SuperTwin is a digital twin ecosystem designed for HPC systems. At the core of the SuperTwin, there is a Knowledge Base which is built upon a specialized ontology. By generating a Knowledge Base which describes target systems, SuperTwin fuses functionalities of several analysis and visualization frameworks; providing insights from system to component level with its simple Python API. During the webinar, we'll explore the design and capabilities of SuperTwin, highlighting its system and hardware performance monitoring, live performance modeling, and advanced mapping and augmentation features through concise demonstrations.