Last night when I was continuing my never-ending search for good Gundam games (there are very few that are action games :( ) I saw "SD The Great Battle" in the list at Gamefaqs and clicked it. Noticed that it's a cross-over between Gundam, Ultraman and Kamen Rider! Then I found out that it was just the first in a series. It's cool and all of them all action games.
SD The Great Battle (Super Famicom)
(http://coolrom.com/screenshots/snes/SD%20The%20Great%20Battle%20%282%29.jpg)
The Great Battle II: Last Fighter Twin (A beat 'em up) (Super Famicom)
(http://img.gamefaqs.net/screens/a/f/2/gfs_9393_2_1.jpg)
The Great Battle III (Also a beat 'em up) (Super Famicom)
(http://img.gamefaqs.net/screens/9/a/8/gfs_9395_2_2.jpg)
The Great Battle IV (a side-scroller) (Super Famicom)
(http://img.gamefaqs.net/screens/6/e/d/gfs_9401_2_2.jpg)
The Great Battle V (a sidescroller/3rd person shooter, like Wild Guns) (Super Famicom)
(http://img.gamefaqs.net/screens/1/1/6/gfs_9412_2_2.jpg)
The Great Battle VI (sidescroller) (Playstation)
(http://theisozone.com/images/screens/playstation-52034-51378790538.jpg)
Tekkyu Fight! The Great Battle Gaiden (sidescroller) (Gameboy)
(http://img.gamefaqs.net/screens/f/6/a/gfs_7590_2_1.jpg)
The Great Battle Gaiden 2: Matsuri da Wasshoi (Sidescroller) (Super Famicom)
(http://img.gamefaqs.net/screens/1/2/e/gfs_9397_2_2.jpg)
Great Battle Pocket (No idea what kind of game this is but it looks strategy-ish) (Gameboy Color)
(http://img.gamefaqs.net/screens/a/d/7/gfs_15969_2_2.jpg)
Great Battle Cyber (Beat em up) (NES)
(http://img.gamefaqs.net/screens/3/a/0/gfs_9387_2_3.jpg)
Great Battle Fullblast (Beat 'em up?) (PSP)
(http://4.bp.blogspot.com/-J4Z-vEz8Ih8/TsSpnnhyHgI/AAAAAAAAJno/lzswcE09W68/s1600/l_4ec0f098dfdf4.jpg)
I'm still looking for a Great Battle Cyber FC cart. It looks pretty good. You might also like SD Hero Soukessen: Taose! Aku no Gundan and Ultraman Club: Kaijuu Dai Kessen!!, as those are both side-scrolling FC action games.
I happen to own the arcade board of SD Gundam Sangokushi Rainbow Tairiku Senki (video here (http://www.youtube.com/watch?v=YGpjOe24opc)), it's a pretty cool Contra-esque run 'n gun with SD Gundam. The game currently unemulated, I believe. There's also a sequel called Kidou Senshi SD Gundam - Psycho Salamander no Kyoui oh.
I have all of the The Great Battle Series on the SFC,there awesome games,speaking of which I need to pick up Kamen Rider SD - Shutsugeki!! Rider Machine.