Volbeat

At a glance, Volbeat is the epitome of many things you would expect of the average Bug-type; poor stats and a mediocre movepool alongside insubstantial abilities are just some of the things that he has in common with fellow Pokemon of his type. However, this little firefly does possess a few interesting qualities that set him apart from his brethren. Notably, he has access to the rare combination of a +2 Special Attack-boosting move and Baton Pass, and though he's outclassed by other users of the combination, such as Plusle and Minun for the most part, he can be a decent user of it. Furthermore, he is the only Bug-type bar Shedinja who can use Trick, which gives him a unique niche as a Bug-type Choice item user. Overall, don't expect Volbeat to be amazing; he is almost always outclassed in whatever role he plays, but can be an interesting and useful team member when used correctly.