Time for what will probably be the only intelligent post you will receive. Certain sprites look bad together when mixed. Note that sprites for Mystery Dungeon are much more greatly detailed than that of FR/LG, and that the trainers pale in comparison to the size of the Pokémon. The other element in this mishmosh of sprites is the male protagonist of D/P. His style is different and more detailed than that of a FR/LG trainer. I urge you to adopt one and only one style of sprites or else it looks odd.
Remember to capitalize the names of Pokémon, always. That's grammatically correct as far as Pokémon goes. You said "machop" a number of times. Avoid using too many exclamation marks. "!" is enough. "!!" is pushing it, and is fairly ugly. "!!!!" is just ridiculous. The first one will tell us whether or not the character is shouting, and if a word must be stressed italicize it. The same goes for an elipses ("..."). Three is pretty well enough. As for the speechbubbles, they are in general neat, if a bit plain. In a few panels, specifically the fourth the text is very weirdly placed. Be sure to write what is planned to be said before making the speechbubble for it, or you'll find that there's more room and not enough words to fill it all. The last panel is atrocious looking. Avoid crappy backgrounds made in a split-second in paint. Try using a nicely detailed sprited background from a game instead.
As for the plot, it's nonexistent. All this was was a mere battle... and I predict that should this comic continue, most, if not all, of it will comprise of matches with an absent plot or direction.
The blueguymeter™ says...
Graphics 6/10
Mixing sprites is a no-no. Paint backgrounds too...
Wording, Grammar and Spelling 7/10
Apart from overkill with elipses and exclamation marks it's not horrible, but the words lack any thought or power; they're boring and ho-hum.
Storyline 4/10
I've yet to see a discernable one... Perhaps in the future?
Effort 6/10
It looks like you tried... a bit... but more could have been done.
Potential 2/10
I don't see this going anywhere at all.
You score a 50/100 on the blueguymeter™!