Who is the hardest Persona boss?

If you're asking about the hardest Persona boss in the series, it really depends on which game you're referring to and your own personal skill level. However, some bosses are widely considered to be more challenging than others. For example, in Persona 5, many players found the final boss, Yaldabaoth, to be particularly difficult due to its high health and powerful attacks. In other games, such as Persona 4, players may have struggled with the boss in the Midnight Channel, which requires careful timing and strategy to defeat. Ultimately, the hardest Persona boss is subjective and can vary depending on your own experience and skill level.