Well, people have a knee-jerk reaction to sprite comics. I read only three: 8-Bit Theater, How To Make a Sprite Comic in 8 Easy Bits, and my own, The Adventures of Emo Samurai. AOES isn't really a sprite comic at heart, it's actually a minimalist (pretentious word for stick figure) comic that uses sprites for certain characters. I keep meaning to read Bob and George, but I still haven't gotten around to it. Someday, perhaps.
Now, your writing is good, which is important... but the fact is that a sprite comic has to have writing five times as good as a normal comic just to appreciated on the same level. Your best comics
by far are 4, 5, 6, 8, and 13. As a sprite comic, your characters dont have very detailed facial expressions, so their personality is expressed almost entirely through dialogue.
Be wordy. Tons of dialogue, go wild. Kluby's personality is a little blank right now, he could go anywhere with any given comic. While that does give you a lot of freedom, it also hurts the experience for your viewers. At any point you could kill off Kluby and introduce his kid brother, Newby, and nothing would have changed for the audience. It's tough to make the readers care about sprite characters, so you have to work for it with intense characterization.
8-Bit Theater does this to an extreme: Black Mage is crazy and evil, Fighter is absent-minded and good-natured, Thief is clever and greedy, Red Mage is arrogant and silly. Start by considering what Kluby would do in any given situation. If it sounds like a million other characters in webcomics, start giving him unique quirks until he himself is unique.
http://sushidatabase.comicgenesis.com is my own comic. x3