Doubutsu Sentai Zyuohger

Zyuland, a world parallel to ours, is attacked by aliens, the Deathgalian. Four of its inhabitants (called Zyuman), Sera, Leo, Tusk and Amu call a young man from our world for help, Yamato. After taking human form, all five form the Doubutsu Sentai Zyuohger. (imdb)