[MEME] Visual Pings!

Basically the gist of this meme is to create a square grid comprising of characters who catch your attention the moment you see them (i.e. You're pinged by what they look like, rather than their personality, though personality can supplement). Then other people try to spot patterns based on the characters on the grid :3

( Behold! A 6x6 table of characters that hit my aesthetic pings. Can you spot any trends/patterns? )

1st row
Serge [Chrono Cross]
Hydralisk [StarCraft]
Male High Wizard [Ragnarok Online]
Female/Male Ranger [Ragnarok Online]
Firo Prochainezo [Baccano!]
Tsukasa [.hack//SIGN]
2nd row
Mukuro Rokudo [Katekyo Hitman Reborn!]
Chrome Dokuro [Katekyo Hitman Reborn!]
Akito/Agito Wanijima [Air Gear]
Bonten [Amatsuki]
Viral [Gurren Lagann]
Isako (Yuko Amasawa) [Dennou Coil]
3rd row
Victor Niguel [Trauma Center]
Anti-Form [Kingdom Hearts II]
Amaterasu [Okami]
Lucas [MOTHER 3]
Protagonist [Devil Survivor]
Toto Sakigami (back when I thought he had albino colouring) [Deadman Wonderland]
4th row
Guy Cecil [Tales of the Abyss]
Protagonist/Minato Arisato [Persona 3]
Mitsuru Kirijo [Persona 3]
Yukari Takeba [Persona 3]
Naoto Shirogane [Persona 4]
Rolenta Ellenhart [Knights in the Nightmare]
5th row
Crozeph Ross Arlay [Knights in the Nightmare]
Rolf Rolinger [Knights in the Nightmare]
Moira Chateletze [Knights in the Nightmare]
Rita Mordio [Tales of Vesperia]
Tristana [League of Legends]
Kog'Maw [League of Legends]
6th row
Scout [Team Fortress 2]
Sniper [Team Fortress 2]
Jin Kisaragi [BlazBlue]
Rachel Alucard [BlazBlue]
Arakuna [BlazBlue]
Soma Cruz [Aria/Dawn of Sorrow]

Not listed: Lambo (aged up) - Katekyo Hitman Reborn!, ~*Legolas*~ - Lord of the Rings, Jack Skellington - The Nightmare Before Christmas