The Gupta king who assumed the title of 'Vikramaditya' was

Chandragupta II (also known as Chandragupta Vikramaditya) was one of the most powerful emperors of the Gupta Empire in India. His rule spanned c. 380 – c. 415 CE during which the Gupta Empire reached its peak. Art, architecture, and sculpture flourished, and the cultural development of ancient India achieved new heights. The period of prominence of the Gupta dynasty is often referred to as the "Golden Age" of India.