Bang X Konoha is Probable since both are Ninjas. Chipp X Konoha is too.
But, Chipp X Mei-Fang?? Don't you mean Jam X Mei Fang or Litchi X Mei-Fang??
About between Hazama and Clarice. I think it's because BOTH of their Eyes are almost always Closed, and they BOTH use Dark Summoning Magics. While Hazama summons Snakes, Clarice summons Demons.
And about the other Characters:
Ky Kiske X Saki Tsuzura - Lightning-Users = Ultra WIN!!
Jin Kisaragi X Kamui Tokinomiya - Katana-Users("Yukianesa" and "Tamayorihime") = Mega WIN!!
Order-Sol X Fiona Mayfield - Big Sword-Users = WIN!!
About between Hazama and Clarice. I think it's because BOTH of their Eyes are almost always Closed, and they BOTH use Dark Summoning Magics. While Hazama summons Snakes, Clarice summons Demons.
Closed eyes are the only thing that makes them similar. Hazama and Scharlachrot are more similar by a long shot. The both use chains in similar ways; they are both psychopaths. Now I wonder if Schar has the troll qualities.