Despite his physical resemblance to Naruto, Minato was a very humble and collected man. Very perceptive and shrewd, he was noted as not to do something without a reason. He was well-aware of the terror his reputation inspired in rival villages and would take advantage of it at times, but even then he would remain respectful to opponents. Minato also wouldn't pry into other people's personal affairs unless he felt it was necessary, and was not the type to hold grudges, only feeling sorry for Obito despite his role in his own and Kushina's deaths. If anything, Minato blames himself for his death for several reasons; he couldn't save Obito from the fate that corrupted him, Konoha from the difficulties that arose after he was gone, and even his own son Naruto from the painful and difficult life he suffered as a jinchūriki orphan.
Naruto is not without any of his father's personality traits: both have indomitable spirits and fierce ambitions that drive them through all their choices in life. Both are of unwavering loyalty to Konoha and their loved ones – friends and family – and that devotion inspires all those around them. Like Naruto, Minato had the tendency to create questionable techniques, although in Minato's case it was complicated names he came up with rather than the actual technique. This was seen when he named the "Scorch Release: Halo Hurricane Jet Black Arrow Style Zero", though afterwards he admitted it didn't sound very good.
After becoming Hokage, Minato started to take more pride in himself, referring to himself as "ore", which is a prideful way of saying "I" or "me", instead of using "watashi", a more formal way of referring to one's self. Still, this did not make him haughty as he still addressed others with the appropriate honourifics.