...
Really, If you know It's going to suck, don't use a scapegoat. ¬¬
Random suspitions aside, I'm going to Rape...er...HUG your "Brother's" comic. In a giant bear hug that'll cause the characters to spew out of it like a volcano. And it'll make a BIG mess. Oo;
Graphics: Edits are...Crap. I'm going to bring up the "You're neglecting 16777184 colors" note, here, because there ARE more colors than the 32 ish colors Paint uses at default. This also a good time to say that Janie's face in Panel three of Comic Three looks like somthing I would find If I happened to let a rabid Dog into a pet store full of cats. A Bloody mess.

On the same subject, You clumsily resized the sprite. Image>Strech/skew>Intervals of 100 for resizing sprites. Simple. -.-;
Humor: A Kid says someone's pretty and they run off. Double You Tee Eff. Not Ell Oh Ell. Not Ar Oh Eff Ell. Not Ell Em Aye Oh. Double You Tee Eff. >_>
Story: A Kid gets a pokemon and two people try to steal it. Who does this remind me of? OH YEAH! TEAM ROCKET! IT'S OLD AND OVERUSED, AND I DON'T LIKE IT!
Grammar: If Grammar Natzees saw this comic, This comic'd be a ASCII based Holocaust. It's really THAT bad. Capitalize names (Including the Original Names of the Pokemon), punctuate, and make sure what the characters are saying make sence. >_>
Overall, this comic is bad. Tell your "Brother" to stop making comics until he actually LEARNS how to make them properly. I'm sorry, but This is bad. >_>