Oh, well since I really like your characters for this, I was wondering if you were planning on making a comic on this. Since all these pictures have a story connected with them, I think it would look pretty nice having it as a comic.
Comics take an extremely long time for me to make. I only sometimes draw comics and when I do I need to know exactly what I'll be writing. When I draw, what I basically do is put my musings on paper. I often expand on previous thoughts which is why some images are linked.
It's hard to describe his personality. He's cocky and bold. He likes to be the center of the attention and he needs to be entertained. He gets bored fast and in his case boredom often results in recklessness. His careless stunts and his sassy retorts are what get him in trouble most of the time. He tends to be oblivious to his own flaws, but easily identifies those of others. He can be pretty inconsiderate, but he is by no means a jerk. Although he could be mistaken for one, since he's a blunt talker. He is quite protective of those he cares about or those he can somehow relate to. Even though his behavior often suggests otherwise, he's actually very fairminded for a dragon and would be quick to accept Spike.
Spike and Blaze has a nice ring to it, but so does Flicker and Flame. Spike's siblings were named by their parents while Spike most likely was not, so it'd make sense if their names don't really go together. Then again, Spike and Blaze sounds pretty good.