I got this shit.
Keep in mind this is speculation. And, as a general rule, observable interactions between things outside of pokemon (like fire and water or ice and rock) should need to make sense, but for something GF "made up", like dark, psychic, dragon, and even bug, all they have to do is say "this style of combat is advantageous over this one", so there's no burden for those to be explained by anything more.
>>12499522The poison type is inspired by many things. It could have gone the corrosive acid route, which would probably be SE against it (which would make sense and balance both types for the better), but they went for the venom/poisoning route, and steel types are inorganic for the most part.
>>12499539Dark types use underhanded tactics based on deceit and surprise, which rely on failed anticipation of the victim. But bugs are so simple minded that they aren't affected by it.
This has always seemed like a stretch to me, but it's the best we've got
>>12499594See general rule
>>12499607It's not fire vs. fire. It's a pokemon with fire abilities vs. fire. Naturally, since they can create and control it, they'd be biologically resistant against it.
>>12499649Yeah, exoskeletons. Fighting damage is about great force, and bugs need very precise attacks to be hurt (probably why they're weak to flying, besides that birds eat bugs). I know Caterpie is small, but even a caterpillar falling from a great height or an ant being stepped on would probably be fine.
Also see general rule
>>12499654Steel resists psychic because TINFOIL and it would resist things like Psychic, which is just telekinesis that happens to use mind powers. And other moves like Psywave come in the form of energy, which is treated like force in the Pokeverse
Ice is strong against grass because the cold kills vegetation and hurts organic shit in general. The winter is associated with death, and life in general and plants in particular spring up when it's warm out.
Rock shatters ice.