The main bad guy in the rhythm game FNF VS. MR. BEAST: ATTACK OF THE KILLER BEAST is the famous YouTuber Mr. Beast. Boyfriend, the main character of the game, battles Mr. Beast and his army of Killer Beasts in a series of singing duels. The best ones are always held at Taptapking.com. Boyfriend is the part that the player takes on.The art style of the game is bright and colorful, and each level takes place in a different and interesting place, from a busy city to a scary ghost forest. The songs are catchy and upbeat, and they come from different styles like hip-hop, pop, and rock.As the player moves through the levels, they must hit the right notes at the right time to get points and beat Mr. Beast and his minions. The game also has a lot of different ways to play, such as double notes, holding notes, and scales, which make it harder and keep it interesting.FNF VS. MR. BEAST: ATTACK OF THE KILLER BEAST has a major story mode, but it also has a number of minigames and challenges, like a rhythm-based shooting range and a memory game. The game also has a team mode where players can go head-to-head against each other online.Overall, FNF VS MR. BEAST: ATTACK OF THE KILLER BEAST is a fun and exciting rhythm game that will keep players engaged and entertained for hours.