Can We Play Robust Without Patching IPS file?

Yes, you can download the ROM, which is already patched for you.

All Pokemon Has Secondary Types in RobustRED?

No, there are some pokemon, which don't have a secondary type.

Yes, you can download the FireRed V1.0 and download the IPS patch. Use any patcher for patching and use it.

Filename	Size	Note
Pokemon Robust Red GBA	5 MB	Updated
Pokemon Robust Red IPS	25.54 KB	Updated

GameBoy Advance

GameBoy Advance

GameBoy Advance

RPGXP

GameBoy Advance

RPGXP