The Ratings Monster is a one-time villain from the Cartoon Network original series, Teen Titans Go!, only appearing in the episode "Toddler Titans ... Yay!". He is a giant monster from a toddler version of their show that represents the poor ratings of their show.
In "Toddler Titans ... Yay!", the Teen Titans faced off against the Ratings Monster after Beast Boy discovered his whereabouts thanks to the help of Raven repeating where he was hiding about 37 times. The Ratings Monster roared at them and the kids told the Titans to use a stick to fight him. Robin threw a tiny twig at him but it didn't even faze him. Robin thought that the only way to defeat the monster was with moderate violence but Starfire said that there were kids watching so they shouldn't be doing that. So, he instructed the kids watching to close their eyes while they beat the living crap out of the Ratings Monster. The kids peeked and saw a very mostly-kid-friendly cartoon violent scene of them beating up the Ratings Monster. After they were done, the Ratings Monster lied dead on the floor and Robin kicked his screen to have them sent back to the real world.
The Teen Titans beating the Ratings Monster with moderate cartoon violence.