Specially Defensive Registeel is probably your best bet for a counter on a defensive team, as it takes SE hits from specs Exploud for like 50%, but it is usually pressing boomburst anyways. If it just has those three specific moves, then Rhyperior is a good answer, as it can take a focus blast, but any self respecting Exploud user is using Surf, so that is also a really shaky choice. More generally though, the best way to deal with Exploud is to outspeed it, as it is actually very frail, and not all that fast. Offensively oriented teams should have no problem dealing with Exploud, as basically any Neutral STAB will 2HKO, making it impossible for Exploud to switch into things with even moderate offensive pressure.