Serguei Krouglov is a distinguished theoretical physicist and Research Associate at the University of Toronto Mississauga, with recognized expertise in gravitation, cosmology, black hole physics, and nonlinear electrodynamics. He has held a wide range of academic and research positions internationally, including appointments as researcher, professor, lecturer, and visiting professor, and has demonstrated sustained leadership through advanced teaching in mathematical and theoretical physics. His research centers on the thermodynamics of apparent horizons, magnetic and nonlinear electrodynamic black holes, modified gravity, and related cosmological frameworks, resulting in an extensive body of influential publications in leading peer-reviewed journals. He actively contributes to the global scientific community through scholarly collaboration, peer review, and academic service. His research impact includes 3,051 citations, 191 publications, and an h-index of 32.