Another dimension - often used as a euphemism for death in the English dub of Dragonball Z.
That's Largo right before getting his other arm broken in strip [23].
That magic girl is Kaitou Jeanne from Kamikaze Kaitou Jeanne.
That cat is Piro from Kanon, who is not magical either.
That cute ninja is Natsuki as seen in her first Nekobox appearances.
Fangirl ninjas?

Natsuki speaks:
here's the origin...from when I used to keep the fanboys in line with threats of "the kit" and the clan of fangirl ninjas ^^;
http://forums.megatokyo.com/index.php?showtopic=3278
*sniffle* I'm getting all nostalgic