Kyogre summons rainstorms. Naturally the Thunder/Lightning is part of the territory. :P

1. Musharna: I got into Munna because someone else on another forum insulted it when the fifth generation was coming out. I thought it was cute, and posted adorable fanart of Munna to troll him. I eventually grew to like Munna (and Musharna when the evolution was introduced) as a Pokemon. The things one can do with Dream Mist, and a little imagination. 8D Moreso after I used it in-game. She's bulky enough to take hits and dish them out.

2. Togekiss: I like Fairy types in general, but Togekiss is my favorite. (Even before Fairy existed). It's an adorable angel that spreads happiness to all. What's not to love? Also, Serene Grace + Thunder Wave + Air Slash = Frustrated opponent

3. Flygon: It's an adorable Dragon type that's easy to get. The other Dragons at the time were too rare, came too late in the game, was a boring Normal/Flying type (Swablu), and/or are a pain in the arse to evolve.

4. Gardevoir/Gallade (Their tied) They're both elegant, yet somehow cute at the same time. 

There are more Pokemon I like, but then this list would be ridiculously long. Also, a lot of the reasons for liking them are the same, and it would get repetitive. :P They're either cute/look good, they're good in battle, and/or they're easy to get in-game. 

Pokemon I dislke.

Hypno: Musharna does the dream eater thing better, honey. :P You are a pedo. 

Charizard: I got bullied when I was younger because I preferred Pikachu over Charizard. I still have resentment for that wannabe Dragon to this day... >_>

Ferrothorn: Although now that it doesn't resist EVERYTHING anymore, it's not so much of an issue but I still find it annoying and not cute. :P

Blaziken: When I use it, it dies before it gets to do anything. The opponent uses it, it sweeps my whole team... :/

Emboar: I just... don't like it... :/