Recent advancements in the study of the transient Universe have led to the discovery of numerous new astrophysical phenomena, many of which are linked to the formation, evolution, and diverse emission phases of neutron stars. This seminar will provide a comprehensive review of the wide range of known pulsars, their simulated population, and the underlying physics that explains their varied emissions. Additionally, I will present recent findings on a perplexing category of long-period radio transients, which may represent a new type of highly magnetized pulsar. At higher energies, I will discuss preliminary results from the newly launched X-ray mission, Einstein Probe. This mission is poised to revolutionize our understanding of the transient soft X-ray sky, particularly focusing on the most energetic classes of neutron star transients and the Em counterparts to binary neutron star mergers.