My imagination applies to your imaginative response to my simple question.
"he is alive in another dimension, like the hearts and minds of humans."
That's true according to Christian doctrine. However, what's not true is that Jesus WAS king. King Louis [insert any Roman numeral] was king of France, but he lost his throne when he left this world, because his kingdom is of this world. Since you've proven yourself to know so much about Christian, specifically Catholic doctrine, I'm surprised you don't know that Jesus's kingdom is not like Louis's kingdom. Jesus's kingdom is not of this world, meaning it's not limited to this world [John 18:36]. The Pope is the head of the One True Church, assuming we're Catholic (which neither of us are. To me, his jurisdiction doesn't apply to squat). So he's the head of the Christians of this world, yet he still recognises Jesus as his king (You know, King of kings. If he doesn't the Catholic church is seriously messed up.) Call him a king if you like. His kingship is akin to Louis, not Jesus, who still rules right now, while all the popes so far have lost their kingdom because of their deaths.
"Catholics refer to the Pope as (Jesus in the flesh) the walking Christ."
Anyone who believes that knowingly and obstinately is a heretic. Any doctrinally consistent Catholic will tell you that, and I suspect most Protestants, too. The Catholics refer to the pope as the Vicar of Christ, meaning that he is a representative of Christ, not Christ himself.