[Armin makes a few notes after Heather names her pokemon, chewing a bit on the end of his pen as he thinks it over.]

Sion said the creature might be a psychic type -- or whatever this creature's world's equivalent of that is, seeing as it is weak to bugs and resists fighting moves. In which case, any dark or ghost type pokemon you might have could be useful too.

[A few more moments of pondering, a bit more pen chewing.]

Though... do you have any powerful electric types?