Please help identify a transformer from my youth.

Back when I was but a youth (In the 80's most likely.), my Mom bought me a box of transformers. Atleast I'm fairly certain they were transformers.
The box was in Japanese (Fairly common in my time growing up in Hawaii.), and my memory is fuzzy on the matter.
I don't remember much, but maybe enough to help.
The entire group combined into one large robot.
In the box was a large gray robot that turned into an elephant and also into a tank.
The top of the transformed mode had a large canon with 2 smaller ones on the side of the big gun, and the front had articulated tusks and 2 smaller guns. Also what looked sort of like a cockpit with a large orange clear piece on the head.
This comprised most of the body of the combined form. Extendable arms and legs increased the size.
One of them was a black robot that turned into a panther which could also turn into a tank. The tail swiveled into the tank's canon.
Another was a gray robot that turned into a lion and into a tank. A memorable feature was 2 yellow pieces that unfolded and became the mane of the lion.
They all shared a common tread design where the rear legs, and the front legs tucked under the body to make the treads.
The latter 2 became the feet.
The head was made by a robot that turned into a pterodactyl (Or something like that.). Did not turn into a tank as far as I remember.
I do not remember any of their names.
I do not remember if there were 2 more or not.
I do not recall what faction they belonged to.
I'm pretty sure I recall the thermal insignia, or atleast the stickers.
Any help would be appreciated.
The box was in Japanese (Fairly common in my time growing up in Hawaii.), and my memory is fuzzy on the matter.
I don't remember much, but maybe enough to help.
The entire group combined into one large robot.
In the box was a large gray robot that turned into an elephant and also into a tank.
The top of the transformed mode had a large canon with 2 smaller ones on the side of the big gun, and the front had articulated tusks and 2 smaller guns. Also what looked sort of like a cockpit with a large orange clear piece on the head.
This comprised most of the body of the combined form. Extendable arms and legs increased the size.
One of them was a black robot that turned into a panther which could also turn into a tank. The tail swiveled into the tank's canon.
Another was a gray robot that turned into a lion and into a tank. A memorable feature was 2 yellow pieces that unfolded and became the mane of the lion.
They all shared a common tread design where the rear legs, and the front legs tucked under the body to make the treads.
The latter 2 became the feet.
The head was made by a robot that turned into a pterodactyl (Or something like that.). Did not turn into a tank as far as I remember.
I do not remember any of their names.
I do not remember if there were 2 more or not.
I do not recall what faction they belonged to.
I'm pretty sure I recall the thermal insignia, or atleast the stickers.
Any help would be appreciated.