It's mecha (robot) fighting game.
The game is so small around 20-30 megabytes.
I remember played it in around 2003-2008.
There are 6-8 (not sure) mechas to choose.
The first one is blue and his ultimate move is beam saber combo.
The second one is red and his ultimate move is flaming kick combo.
The stage before the last boss, you'll be ganged by these two.
Can't remember the other mechas well, but I remember there is mecha that look like dog (He stand on four legs).
Can anyone answer this ?
I thank you for your kind and effort.