Human Burst and Blast

Ah, the twins. I haven't spent much time with explaining these two, have I?
Oh well, better late than never, considering I've got some explanations to make.

BLAST
Full Name: Blast Kuro Robotnik
Age: 13
Height: 5'3"
Weight: 157 lb
Elemental Affinity: Chaos
Other info: Quite the flirt. (hm, I wonder who he gets THAT from?) Likes to mess around with the opposite sex, in a non-perverted sorta way. Think the type of dirty jokes most 13-year olds know. Is always hanging around Dimitri--they're both nuts for skateboarding.

BURST
Full Name: Burst Shiro Robotnik
Age: 13 
Height: 5'1"
Weight: ???   
Elemental Affinity: Chaos
Other info: Silent and aloof, except when she's with her brother and Aki. That's when she actually has a personality. She really looks up to Aki, and even calls her senpai when no one else is looking. They're a lot like Sonic and Tails, actually.

Okay, so... they're twins. You got that already. I upped their age because, I honestly can't draw characters anywhere near Cream's age and they're not Cream. I just can't. I don't know why.
So, yeah, as you can tell, Blast looks like his dad and takes after his mom, and Burst is the opposite. They actually get along really well for twins; most would be at each other's throats at the age of fetus. They argue constantly, but they eventually get past it. Since they have the blood of Shadow running in their veins, they both possess Chaos powers, but they're sort of like Plusie and Minun-- that is to say, they aren't really strong unless they're working together. Their powers complement the other, as in Burst handles defence better than Blast, but Blast can attack far bettter than Burst. If these two ever actually have a mutual hatred for someone, there's a chance you're gonna see a Chaos Blast mark a mile wide.