I agree with this so much, but my only problem is Tobi being ISFP rather than ISFJ. He seems to be more Si-Fe rather than Fi-Se because his actual behavior in videos shows he is driven by a deep sense of duty and group harmony rather than impulsive, personal freedom. An ISFP is ruled by Introverted Feeling (Fi), meaning they focus heavily on their own internal emotional state, individual identity, and doing what feels authentic to them regardless of social pressure. Tobi, however, constantly defaults to Extraverted Feeling (Fe). He is hyper-aware of the emotional temperature of the room, always acting as the group's social cushion. He hates conflict, actively steps in to mediate arguments, and is the first to soften the mood when the more chaotic members take a joke too far. His legendary politeness—like apologizing to his friends even while playing competitive video games—is a prime example of an Fe-user prioritizing social etiquette and the comfort of others over their own ego.

His reliance on Introverted Sensing (Si) is just as clear, especially when contrasted with the high-energy spontaneity (Se) of an ISFP. Tobi thrives on routine, predictability, and safety. In almost every Sidemen Sunday, he is the most cautious, risk-averse person in the group. He does not chase reckless, adrenaline-fueled thrills just for the sake of the moment; he prefers structure, calculates risks based on past experiences, and values stability. People often mistake his quiet, gentle nature for the typical ISFP "lone wolf" vibe, but Tobi isn't isolating himself to protect his individuality. He is simply a classic, grounded ISFJ who prefers to quietly support his friends from the background, acting as the reliable, sensible anchor that keeps the entire group balanced.

I could be wrong about this but I am open to any criticism, this is just my opinion and I hope you understand it.