Birdy. Everything he says is a One-Liner or thought comparable in style to Steven Wright and Jack Handey, though he says it in such a cool-headed, calm and collected manner that you can never tell if he's insane or just really deep. If there was ever a case of Makes Just as Much Sense in Context, Birdy said it, mostly because what he says is never in context to begin with.
Birdy made two separate vocal appearances in Sgt. Frog Abridged, both of which referenced Jetters Abridged. The writers are still deciding if the two series take place in the same universe or if Birdy is just that transcendental, given that Jetters Abridged is written to never reference SFA.
According to the SFA Ask Blog, Ask GiroDoro SFA, the Keronians have tried to invade Planet Bomber, only to fail. Giroro and Dororo make a comment on how lucky they are that the super-strong Bombermen are peaceful.
The Chew Toy / They Killed Kenny: Louie, who dies in every episode, sometimes several times. Though his death is never seen and often happens with no viable explanation, the characters will usually acknowledge the death, and after just the first episode it's pretty easy to tell when Louie has died.
Has Two Thumbs And: A variation in Episode 4. Dr Ein asks "Hey! Who else hates their job?!", finger snapping can be heard, "This guy!"
Heroic BSOD: Shiro is in the middle of one at the start of Episode 5 as the obvious death of his brother is finally starting to hit him. Comes back in full force at the end when he realizes Max might be Mighty.
Hijacked by Ganon: An inverted running gag in the series. The people that hire the Jetters are always more evil and a greater threat than the Hige Hige Bandits. Hell, as of Episode 4 the Jetters are more evil than the Hige Hige Bandits.
"Kids aren't allowed in the Jetters! Except for me..."
Also Dr. Ein in the same episode:
Bongo: "I know your pain, Bongo. We'll take the jo-"
Ein: "Shut up, Bongo! God! You're so insensitive! Anyway, disgusting ant creature, we'll take the job out of pity."
Idiot Hero: Defied. Thorn specifically wanted Shiro to not be a stupid protagonist like is found in every other Abridged Series (including his own), though Shiro could still exhibit naivete due to being a child. Every other character, however... Let's just say there's a reason BigTUnit1 calls the Jetters a "ragtag team of suck".
Jerk Ass Dissonance: Played with. It's pretty clear that Mighty's a jerkass hero that everybody inexplicably loves, but nobody denies this either. Shiro even straight-up admits to Mighty being a jerk in the first episode.
Everyone has their moments, even the mild-mannered Birdy:
Birdy: "Oh man."
Shiro: "What is it?"
Birdy: "A man with no corners. You're not very smart, Shiro."
Kafka Komedy: Nothing goes right for the Jetters. Protect a treasure from the Hige Hige Bandits? Their client is a bigger threat to the universe than them. Stop the new villain? End up in jail for murder. Finally get out and get back to work? They're broke and they lose their house by the next episode. And so on and so on...
Physical God: The Bomberman have the powers of gods, including creation from nothing, revival of the dead, and instant killing, (when Louie gets involved, all three can apply). Mighty lampshades this in the first episode.
A God Am I: Averted. Though the Bombermen have god-like powers, they seem fairly responsible with them and treat them like a part of growing up.
The theme song, "Bulge Bomb", is a song parody of "Car Bomb" by Negativland, and instead of car parts it lists off various silly things in Bomberman Jetters and the commonly-seen fan translation (hence "'Fire' in English is called 'Fire'").
Like in the original, Bongo ends most sentences with "Bongo", even if it's just a one-word sentence.
Also like in the original, Top Bomber says (with rolled R's) "Guru guru", the Japanese onomatopoeia for spinning. However he also ends every sentence with "-ururu", and thus Mujoe sends him to a nebula.