Dai-2-Ji Super Robot Taisen OG

--180223--
It is much more mecha than Tekkaman Blade, Orgun, Heroman, S-D Gundam and Iczer 1 + 3 and they got in.

--Shaded_Phoenix--
Yes, Lelouch doesn't like to relive on others, I forgot about the part with JLF, or the Chinese Federation.
Lelouch probably wouldn't have heard the name Amalgam. (Souske didn't). Until one of the members gives him the offer.

Still, Amalgam would join up with the S-1, mostly to learn about their Technology.

as for the Undertakes, I just say who you think they would team up with.

TARTAROS, has already happen, but how is it similer to Ragnarok?
They both create a new world and that's it.

Thanks for clearing up that bit about the Jovain Lizards.

--Hikari Sword--
They would work together, also you have the Coralian from Eureka seven who try to understand humans (I think, I don't really understand that show.)
And you have the Vajra from Macross frontier as well.
yes they aren't metallic, but they are trying to understand humans.