Poliwag I caught in Violet City, by mistake actually. When I was reading Bulbapedia, I thought it said it had a 15% Encounter Rate in Violet City, as opposed to to 5% Rate everywhere else with the Old Rod. Come to find out, I screwed up and read the original G/S/C Encounter Rate list.
So, in the end, I went back to Violet City for nothing. Worked out though, since Dark Cave was just next door, and Cherrygrove just two routes away.
Also, as soon as I get the Good Rod, I'm going back to New Bark Town and catching me a Chinchou. But first, catching a Slowpoke in Slowpoke Well.
Edit: Oh shi-! Just found out I can catch a Tentacruel on Route 32 with my Old Rod. Oh hell yeah, I'm so catching that.
You tempt me to play a Water monotype.
Go do the bug challenge again and beat red. Tell me I don't need to grind :P
I think I could probably pull it off if I managed to change the weather, and pass speed/attack boosts to my Armaldo. :D