But they'd better hurry—the stranded Oliver Queen and another lost member of the Green Arrow family are both being hunted by a brand-new villain called…Troublemaker.

Source: https://bleedingcool.com/comics/green-arrow-2-preview-search-party-pooper/

But when he's fighting alongside Barry, he does it as the Green Arrow.

Source: https://comicbook.com/tv-shows/news/the-flash-trailer-green-arrow-return-crisis-on-infinite-earths/

Green Arrow and The Flash aren't exactly friendly to each other in the comics, but The CW's Arrowverse made the two heroes staunch allies.

Source: https://www.cbr.com/the-flash-green-arrow-friends/

Green Arrow can be one of the first major DC heroes to really delve headfirst into the threat of these new enemies.

Source: https://www.cbr.com/green-arrow-possible-dc-teams/

Their relationship hasn’t been perfect, but the bumps in the road have shown Black Canary and Green Arrow how deep their love for one another is.

Source: https://screenrant.com/dc-couples-harley-quinn-poison-ivy-superman-lois/