Definitely Swampert. It only has one weakness, ice which can be beaten with a super-effective hammer arm and Blastoise has only one type and not nearly as diverse a move set. Plus, Swampert is so dang cool and good at battle frontier and gyms.
Blastoise is better
i think blastoise would win but it's up to you
Blastoise, Feraligatr, Swampert, Empoleon
swampert, groudon, blastoise, glalie, latios, and feraligator
blastoise
It depends on how u wish to use them. Offensively, Gyrados is better, but defensively, Swampert is better.
Swampert, just by a tiny bit. Hope I helped! :)
Sceptile is way better than Breloom. Swampert is better than Sharpedo, Swampert is also a Ground type.
A Ditto. Besides a Ditto and a male Blastoise, you can apparently breed the following Pokemon with a female Blastoise to produce a Squirtle egg: Lapras, Totodile, Croconaw, Feraligatr, Mudkip, Marshtomp and Swampert. they are all in the same 'egg groups' and should be able to breed with a female Blastoise if they are male.you can also breed a female blastoise with a male omistar to get a squirtle egg.i know because i tried it.
blast
In this case, Blastoise is the best. Charizard has a better advantage against Venusaur because Charizard is a Fire Type and Venusaur is a Grass Type. Still, he has no chance against Blastoise because he is a Fire Type and Blastoise is a Water Type, so overall, Blastoise is the best.
Well, it will be a long battle if they are fighting each other. Since both Pokemon are water types, they both are Not Really effective on each other. Swampert can try using Ground type moves, but that will not really help Swampert much. I'm guessing at the end, Feraligatr will win at the end, since it is faster.
go to the dessert and take your blastoise/empoleon/feraligatr/swampert with you (they need to love you very much however) and get in one of the houses and talk to the old man