I don't know who's scarier; Mechakara or Holokara?
On the one hand, Mechakara is an alternate universe version of Pollo that snapped and, using the skin of his dead former friend, he began torturing Linkara and used psychological tactics to nearly drive our favorite comic reviewer mad to the point of nearly using his magic gun on himself. He is creepily emotionless unless really wanting to show off his scariness by laughing evilly or screaming in rage.
On the other hand, Holokara is scary in a different way. He's like Linkara in every way but from the way he threatened 90's Kid and Harvey Finevoice in these last two videos is making him a little bit unsettling to watch. For the most part, he's fine and acts like the normal Linkara but when he snaps? That's frightening.