Wrongo, I was at the hospital because a certain SOMEONE in this topic who I will not be saying their name nearly paralyzed me because Scolipede was an MVP twice.
Jericho
I'm not sure what's up with the gang thing, but the child event only shows on a windy day, then you have to talk to the mother than find the child in Jasper Ward.
As for Whismur I think you have to talk to the guy who horded it.
Well... Speedrunners do... They have exactly calculated how many they need to OHKO every League-Pokemon even with an non-effective move (so they don't waste time with another Pokemon other than their starter and two HM-slaves)