I bought a number of them (and assembled and to varying degrees painted) way back then. They have been sitting in their storage boxes for a large number of years (and the years have not been kind to them).
This is a Destroid Defender in 1/100 scale by Imai, armed with lots of weapons and is designed to be the main ground combatant.
The main characters use Variable Fighters, capable of flight and ground combat.
Of course in space, you do not need to be streamlined so the fighters can have additional armour.
This is the standard fighter type (a VF-1A) with the additional armour and lots more missiles. The kit is by Arii.
The VF-1A's main armament is the Gau-11 Tri-barrel 55mm cannon. There is a single laser cannon mounted on the head. Additional missiles are mounted on the shoulders, on the forearms and on the legs.
The VF-1J is the officer fighter, identical to the VF-1A except it has two laser cannon mounted on the head (one of which has broken off the model).
They have been packed up again. One day I may finish them.