Originally Posted by Fat NoUserName
I am thinking that the move Conversion gives an extra utility
I'm glad you mentioned Conversion because I have used it in-game to some success. It works nicely because most pokemon rely on STAB + Normal for coverage, and converting to a type that resists itself adds to its survivability. Unfortunately it's too slow to pull it off consistently. Agility is there but Porygon will still have to take a hit as a Normal type to set it up so...
Originally Posted by Fat NoUserName
Walls completly Lorelei(I can't remember if Dewgong has a Normal type attack and Lapras does in Yellow with Body Slam) and can "counter"(not much due to its crappy stats) Sabrina and Koga. Against Sabrina it can use Swift(TM) against her Psychic mons and against Psychic trainers at the Gym and Psybeam(for more PP) against the (Charmers?, users of ghosts). Swift has the advantage of not being affected by Abra's Flash in Yellow.
For Koga, Conversion isn't a good choice in Yellow because Venonat and Venomoth are weak to their own moves, but in RB it is a very good option, especially combined with Psybeam/Psychic.
Porygon should stay away from Sabrina. Alakazam OHKOed Porygon as a Normal type in my playthrough, so even if you use Conversion to Abra for the Psychic resistance, you'll probably be outsped and 2HKOed anyway. Swift won't help much; it is too weak, especially if Reflect is used.
Not sure about Lorelei. It might work ok, especially if you gave Porygon Thunderbolt, but I'm not sure.
So anyway, I think I'm close to ready to write these up. My placements are probably going to be:
- Yellow Squirtle in High for reasons I've already. Basically, Availability is a bit crappy but not overly difficult to overcome and performance wise it's the same as in RB.
- Porygon in Low. As a battler it isn't as bad as it first seems. Thunderbolt + Psybeam proved to be useful coverage for the routes going to Fuchsia, since pretty much everything is weak to one of those. It does lag toward the end though, and obviously it has horrible availability.
- Seel in Top, though I wouldn't mind more opinions on that. Seel/Dewgong can be traded as a reasonable level on Cinnabar (you can actually get it as soon as you beat Koga) for a pokemon that is pretty much next door to the trade regardless of version, it grinds so easily in the Mansion and the Fire gym thanks to typing/movepool and the boosted experience it gets from being a traded pokemon (which not only helps itself but its teammates), it performs excellently from the point you get it thanks to good power and match-ups, and it has everything it needs available to it straight away (Surf and Ice moves). It's pretty much the perfect combination of availability, power and usefulness, and it's by far the best water type in RB if you don't pick Squirtle. In Yellow it actually gives Squirtle a run for its money thanks to superior availability, in the sense that it doesn't require you to stop you progress to catch-up. I think it definitely deserves a position in Top. At the very least it's High though, and if everyone else wants that I'm willing to comply.
EDIT: Well I guess "by far that best Water type" is an exageration since Omanyte can do a similar thing, but the boosted experience does make a significant difference, it can be obtained at a higher level and it evolves sooner so I guess it has slightly better availability.
So yeah I'll hopefully get these written up soon. I want to get them done before the Orange League starts so I can focus on that...