Crustle

Crustle is a usable suicide lead on hyper offense teams thanks to its ability to set up both Stealth Rock and Spikes, a feature lacking in most other lead Pokemon. Additionally, Crustle packs nifty moves in Knock Off and Rock Blast, which are very effective against entry hazard setters and removers like Mudsdale, Ferroseed, and Cryogonal. Crustle has two useful abilities that solidify its role as an entry hazard setter, with Sturdy letting it survive at least one attack and Weak Armor letting it take advantage of physical attackers by receiving a Speed boost when hit, allowing Crustle to outspeed most of them and set up another hazard the following turn. However, Crustle's selection of coverage moves is rather lacking, often making it setup fodder to bulkier Pokemon such as Carracosta and Alolan Sandslash. Crustle is also very slow and generally passive, which makes it vulnerable to Taunt users such as Alolan Persian and Lycanroc. Special attackers in particular are a pain for it, as Crustle has mediocre Special Defense, and special attacks do not activate Weak Armor. Crustle faces immense competition as a hazard setter from Pokemon such as Aurorus, Aggron, and especially Omastar which can apply offensive pressure alongside setting up Stealth Rock, and Omastar boasts higher Speed and offensive power. Lastly, Crustle is quite one-dimensional and predictable, as it's outclassed in other roles like a Shell Smash sweeper and a fully defensive wall by Pokemon like Carracosta and Regirock, respectively.