I Reincarnated as a Mob Villain in a Game and Decided to Become the Final Boss. But for Some Reason, Everyone Thinks I'm the Best King Ever - Can Someone Please Tell Me Why?!

The last boss of the game Altena Fantasia...

...Isn't me. I was reincarnated as one of his underling mob villains. Determined to take the place of the infamous last boss, I resolved to liven up the game as a true villain. But for some reason, all my misdeeds end up being praised, and my reputation soars...?! How did it come to this? Somebody, please tell me!