Lairon

Lairon has access to the combination of Head Smash and Rock Head, allowing it to use a very powerful attack without drawbacks. In addition, it has a very high physical bulk bolstered further by Eviolite, along with several useful resistances including Normal, Flying, and Psychic. Unfortunately, Lairon also has weaknesses to the common Fighting-, Ground-, and Water-type attacks, and a lack of recovery, including Leftovers, limits Lairon's staying power severely. It also lacks the special bulk to survive special attacks from the likes of Charizard; while these flaws do give it a lot of competition from Probopass, which doesn't have many of these problems, Lairon's higher offensive presence can make it more useful in some scenarios.