Series: Taiyou Sentai Sun Vulcan

Taiyou Sentai Sun Vulcan (太陽戦隊サンバルカン, Taiyō Sentai San Barukan), translated as Solar Squadron Sun Vulcan, is Toei’s fifth entry to its Super Sentai series. It was broadcast in 1981-82 and is the only sentai to serve as a direct sequel to the one prior, Denshi Sentai Denjiman. It was Toei’s last series with a Marvel copyright, but again with no Marvel involvement in the production.
Sun Vulcan was the smallest Sentai team to date and the only series with a change in team leader. (Wikipedia)