WIP (1/3)
Halitzer
From: Halitosis, the medical term for bad breath, + Howitzer, a short-barreled cannon that is aimed skyward.
Pronounced: HAL-IHT-ZUR
It seems like 28 is based on bombardier beetles, known to spray their predators with an explosive gas. However, 28's sprayer-abdomen has a mouth, and so I wanted to explain the idea of the neutralizing gas as its "bad breath". Halitosis is such a funny (and technical) way to describe bad breath in a word, but the syllables made it too much of a mouthful to use the old "descriptor/element + animal" mashup that Pokemon always implements. Wanting to find another word that either emphasized a 'battle' or an 'insect' aspect to the name, I found that the word 'Howitzer' overlaps perfectly and makes the name easier to naturally pronounce. 28's body shape even has that squat-body, upwards-cannon shape that Howitzers have!
WIP (2/3)
Fragdomen
From: the verb Frag, to attack with an explosive (usually a grenade), + Abdomen, one of the major body segments in insects.
Pronounced: FRAG-DOH-MIN
Another militarized take on 28, but this time with a more overt bug reference. I wanted to make sure the name didn't use terms synonymous with poison elements (so players aren't misled into thinking 28 is Bug/Poison-type), but also acknowledged its chemical attacks. 28's design also heavily focuses on the power of its tail-end, so 'abdomen' acknowledges this aspect while also sounding bug-like.
Feedback requested!