Oh, if you’re playing via emulator, the PS2 armored core games is when you can start actually making your own emblems outside of the in-game editor. (link is for a converter tool) Just that you need a tool to convert it to the save format the game understands, also it image you’re converting has to be a png, it can’t be bigger than 128x128, can’t have more than 255 colors (as the 256th ‘color’ is reserved for transparency). I have a couple examples below that i’ve done.
The Tortuga one is for my tank leg only run in 3, which it’s what google translate says is spanish for turtle.