Galvatron and Megatron is basically the same thing. Megatron was basically been repaired and power boosted by the Mini-Cons in the Armada series (and hence rename himself Galvatron) after been badly damaged by Nemesis Prime.
Packaging by Takara. Galvatron is basically a repaint of Megatron who is mainly green in colour. I think Galavatron is much better looking than Megatron with the mixture of white and purple colour, which reminds me of the G1 Galvatron.
Galtaron's alternate mode is a tank. Nothing out of the ordinary except for the claw just below the cannon.
The tank had a ramp and a claw on the right side and a Mini-Con "Prison" on the left side. Unfortunately, the "Prison" is not big enough to even keep a Mini-Con.
The Mini-Con will activate the Surface to Air Missile in Galvatron's alternate mode
Galvatron in robot mode with Tidal Wave. In the cartoon series, Tidal Wave is way bigger than Galvatron
Galvatron and Optimus Prime. Notice how "tiny" Optimus is compare to Galvatron. In cartoon series, both seems to be about the same size.
Galvatron and Optimus Prime Super Mode. Now, Optimus Prime Super Mode is way too big when compare with Galvatron. I think the size between these two leaders were an issue back then and was rectified in their subsequent toy line, the Energon and Cybertron series.
Galvatron can conveniently place his cannon below his arm pit to take a shot at his enemy.
For more firepower, the tank's turret can be turn 180 degrees. This will bring forward all his weapon system which include the missiles and Clench forward.
In robot mode, Galvatron can hold a record of 15 Mini-Cons, more than any Transformers (Unicron not included)
Clench can transform to a gun for Galvatron to use. Clench can also transform to a weapon and attached to the port at Galvatron's arm as a ready to use weapon.
Clench can be attached to Galvatron's right shoulder according to the manual. This arrangement is not seen in the cartoon series.
Another arrangement not seen in the cartoon series were the placement of 3 missiles on Galvatron's left shoulder.
For more fire power against the Autobots, Galvatron can combine with Tidal Wave to form Burning Galvatron. The backpack will give Galvatron aerial capability, the left arm attachment as shield and the right arm attachment as series of laser cannons.
Galvatron has a perfect 10 in his bio card and without doubt my favourite toy in the Armada series