In the song "Happy," from FNF Mickey MOD - Happy, Mickey displays unusual behavior, showcasing a strange, somewhat deranged happiness after experiencing unhappiness due to Minnie's departure (likely for a reason). Now, he smiles with a suspiciously odd demeanor. As he starts to sing, BF joins him, and Mickey's mental condition escalates. In the last minute of the song, he bursts into a chilling laugh, "HOHOHOHO͜O̡O̧O̷͡͝O̴O͏̶͜O҉O͝O͟͏̢," indicating a descent into madness. His eyes widen, lacking pupils, and he grits his teeth in a terrifying way, with his voice adopting a slightly altered tone. Despite this disturbing change, BF continues to sing, appearing unaffected by the peril around him, which includes death threats and Mickey's increasingly maniacal demeanor.