https://youtu.be/869_lwZfyTo use this vid as background info ig if u don't know what splatoon is- well uh idk maybe ignore this bc you need to know about splatoon before you read this theory or else this will make no sense

so, using the offline Inkopolis Square, the closest bot i could find was Elisa. Saying that she had black eyes when in the cutscene Marie was introducing herself to Agent 4(when she didn't even know the Squid Sisters), one was very familiar, and it was Elisa. I mean YEAH, there were other colors of eyes later in the trailer. But honestly, I feel like the beginning is the most important. So, yeah. Again, this is very inaccurate so idk if i can find Agent 3's real name. (Gonna need the first Splatoon game for that one, and i don't have it, so it'll probably remain a mystery forever, unless Nintendo decides to release the first Splatoon game back on a different console, which i doubt that'll happen.) Now, I'm gonna go play splatoon and see if i can find more research-

but its soooo inaccurate tho ;-;

ok now i have a feeling agent 4 has a sister ._.