Snypar

Use a level 100 Zekrom... The point of this post is to give us more detail. What are you struggling with? One of his Pokemon? All his Pokemon? Are you under-leveled?

The thing with weird Pokes is that their is a fine line between usable, and useless, and I've played Pokemon for too long to waste my time with Pokes that are outclassed. (Exceptions being starter and legendary Pokemon) I'm aware that not everything has to be OHKO, and in doing so, it can take the fun out of the game, but I find if I set up or use X-Items then game becomes boring, because I'm almost guaranteed to set up, and in-game doing that against a strong trainer isn't much fun. +Apologies for going off topic widely.

*What? Does in-game actually take skill? All you really need are quick pokes, with hard hitting moves, and you'll win. +Unfezant sucks... =P

I personally don't like set up moves, especially for in-game. Meganium was just horrible...horrible. 80's, it's what happens when you give the game to your nephew and tell him "don't leave this area".

The moves it learns aren't great, Leaf Blade and Giga Drain are the only ones worth having + it's filled with grass type moves. It doesn't learn any good TM's (AERIAL ACE ANyWUNZ!!111!). Tepig would of been my preferred choice had I of had any information on the Pokes. Oh, I didn't struggle with Snivy, I over-leveled like a boss, had I not been in the 80's by the end of the game with it, I assume I would of struggled.

Since my Pokemon were over-leveled they were all pretty easy, but Iris was the hardest for me, not the actual battle, but the puzzle leading to her.

I chose Snivy because a friend told me it was the best, half way through the game, I realized he trolled me.