The Honda Motor Company is not a relationship with the Isuzu vehicles.
Isuzu
No. Honda is a separate company from Isuzu, owned by the Honda Motor Company, that currently only owns Acura. Isuzu is only related to Honda by about 40% or 45% of their vehicles, but they are not the same company. Isuzu is actually owned by Suzuki.
I not sure
Yes, Isuzu was the sole builder and designer of the Passport.
Yes and no. Isuzu is partly owned by Honda, but the other part is owned by Chevrolet.
The whole car was made by Isuzu, including the engine.
Isuzu Rodeo, Possibly Isuzu Trooper, and The Isuzu Amigo
Isuzu
No. Suzuki is it's own company. Isuzu is owned by Honda.
ISUZU
Yes. You can find the Isuzu Amigo at the Honda sale dealers.