Supermarionation shows

[XYZpdq Jr.]

Could someone help me here. I remember watching a
supermarionation show in the mid-late 80ies that had the vehicles that combine into a mech. The human puppet cast had sphere shape robots helping them in and out combat. Fighting and blowing up their cube shape bad guy counterparts.

Combining form mech might be you remembering Star Fleet aka X Bomber, but yeah the spheres and cubes is def Terrahawks
Don't think Terrahawks had a giant robot like X Bomber though