Atom Ant is a cartoon character created by Hanna-Barbera in 1965. He is a superhero ant who can fly and has super strength, all proving his small size useful when fighting crime.
His first spin-off into comics began in 1968 in publications by Gold Key. He later appeared in Hanna-Barbera crossover comics published by Marvel Comics until 1995, in which he made an appearance in Archie's Hanna-Barbera Presents. His last comic appearance was featured in an issue of DC's Cartoon Network Presents.
Dietbolical (Cartoon Network Presents #20, 1999)
A criminal named Dietbolical is using his vacuum-type device to suck up and steal every fattening food in the country, so Atom Ant is called to the rescue. When Atom Ant crashes into Dietbolical's secret laboratory, is attacked by a nacho-shooting robot before the room is flooded with chocolate, his weakness. He sucks up all the chocolate, getting a very distended stomach though still able to fly.