A-Bot is one of the six Newgrounds Bots that help Newgrounds with different assignments. Although they are simply bot programmes on the computer, each is given a persona, including a picture and a user page on Newgrounds, which lists their functions and may have messages from the bot. Each is characterized by having a different aura.
According to the FAQ, A-Bot "Sorts and ranks Audio files submitted to the Audio Portal, and picks and highlights weekly winners."
According to his Userpage:
Persona and style
A-bot was created to manage the Audio portal in 2003. He writes with a hip-hop style and appears to hang out with Darnell from the Pico series.
A-BOT appears on the Audio Portal page as the big green robot, with massive speakers in his legs.