interestingly, it looks like this game's dictionary compression relies on data stored in the $6000-$7FFF range of memory, somewhere, because corrupting that ends up corrupting the text, and likely crashing the game as a side-effect.
HP's lookin a little funny there.
edit: oh right, the question. zigzagoon. dratini second, probably. geodude/graveler/golem (when available) also tends to find its way onto my team a lot.