Make-A-Wish Contribution: The Lonestar skin Private Mels was designed by and named after a kid who visited Ronimo to learn about game creation through Make-A-Wish. All of the revenue for Private Mels continues to be donated to the Make-A-Wish Foundation to this day.
Admiral Swiggins was the winner of the first "Design Your 'Naut Contest"
Grim Genji, Jotunn Skolldir, and Leon Legionnaire were the 1st, 2nd, and 3rd place winners of the "Design a Skin Contest" respectively.
Ix the Interloper was the winner of the second "Design Your 'Naut Contest"
Arin Scalfo, his voice actor, was the winner of Ix's voice acting contest. His in-game slash art was also drawn by PixelHat, the winner of his art contest. His theme song is also performed by MrMacke, a Youtuber who performs a cappella covers of the themes of the other 'nauts.
Many of the voice lines used for Swiggins, Ted, Penny, Sentry, Skree, Scoop, Nibbs, and Ix were suggested by the community on the game's forum.
Fan art submitted from the official gallery was part of the loading screens until 3.3. It can still be seen in the gallery menu.
Skolldir, Vinnie, Genji, and Penny all got their voice actors because of those channels creating publicity. The three TGS Podcast hosts talked quite a bit about Awesomenauts when it first came out.
Skree is voiced by community member Weazel. He was initially supposed to voice Swiggins, but complications ending up getting his role pushed back.
SlowWolf, a long-time community member, forum moderator, content creator, and E-sports commentator for the game got his own announcer in 3.3.