在一個沒有戰爭，所有武器都被禁止的未來，某日，科學狂人基瓦博士將少年麥克的交通機器人強普進行了改造，使其能夠巨大化並變形為戰鬥用機器人伽蘭特，而巧合的是這個時候宇宙黑社會的部門之一宇宙不動產對地球發動了侵略，在人們無力抵抗的時候麥克駕駛伽蘭特擊敗了敵人。<br /> 戰後，基瓦博士撒謊說駕駛伽蘭特的是正義的外星人，需要自己作為中介進行聯絡來欺騙市長等人換取研究經費，並要麥克隱瞞真相繼續作戰，之後麥克的青梅竹馬帕蒂和美少年卡蜜爾也加入了進來，三人一起和邪惡的外星人戰鬥。
Key Animation (eps 5, 12, 19, 24)
Animation Director (ep 6, 11, 18, 23 ), Key Animation (ep 3, 6, 11, 18, 23 )
Theme Song Arrangement (OP & ED), Theme Song Composition (OP & ED)
Animation Director, Key Animation
Producer
Script (ep 1、5、11、15、20、22、23、25)
Mechanical Design (Guest Mechanical Design)
Key Animation (eps 2, 7, 21)
Script
Storyboard (eps 3, 7, 13, 16)
Key Animation (ep 5, 12, 19, 24)
Script
Storyboard (ep 10)
In-Between Animation (eps 1, 3, 8, 14, 20)
In-Between Animation (eps 8, 14, 20, 25)
Key Animation (eps 5, 12, 19, 24)
Animation Director (ep 17)
Episode Director (ep 25), Character Design, Animation Director (ep 1)
Director (chief episode director, ep 4-25), Storyboard (ep 2, 6, 8, 12, 15, 19, 21, 24-25), Episode Director (ep 2, 6, 8, 21), Production Coordination
Director
Mechanical Design
Animation Director (eps 2, 7), Key Animation (ep 2)
Script
Original Creator
In-Between Animation (ep 5, 12, 19, 24 )
Animation Director (ep 5, 12, 19, 24 ), Key Animation (ep 5, 12, 19, 24 )
1984年 季度排名 #1
1984年 動畫總排名 #31