Crustle Carry Crustle - Rexaura
Very niche but can potentially carry once in a blue moon
Build Path

Fury CutterFirst Pick
Increasing damage (per target).

Shell Smash
Omni-defense down. Omni-attack up. Movement Speed up.

X-Scissor
Damage. Displacement. Conditional Stun.

Rubble RouserUNITE
Shield. AOE damage. Stun.
Stat Boosts
Critical Damage
Attack Damage (Upon Goal)
Guide
Emblems: [Atk/Crit] [6 White/6 Brown] (Everything should be Golden except for Aerodactyl, which is up to preference)
-Aerodactyl
-Kabutops
-Sandslash
-Kabuto
-Sandshrew
-Persian
-Ho-Oh
-Meowth
-Furret
-Noctowl
Start with Fury Cutter, get your lane mobs, go stack in the enemy base. Rock Slide is good to stun your opponents while you're stealing their farm, then Fury Cutter for secure. This build plays like a Speedster, since Shell Smash trades bulk for speed and power, letting a potential crit X-Scissor do very very high amounts of damage (any build that relies on crits will most always be niche since it's a matter of luck). Even with Shell Smash lowering your defenses, your Unite is an incredible tool for either a "get out of jail free card", or an aoe stun that can be comboed into an X-Scissor, potentially hitting 2 or more opponents at once. Since X-Scissor deals damage even while you're getting stunned mid animation, you could potentially Shell Smash into a group of enemies (which gives you Unstoppable for the first seconds of activation) and try to steal objectives with X-Scissor, but it's unreliable at best.
(Also, Focus Band can be replaced for another damage item like Razor Claw or Weakness Policy, but the extra bulk can be nice in a pinch.)
Works Well With
Pokemon Unite .GG thanks user Rexaura for sharing this guide on how to play Crustle. Be sure to support your favorite creators by upvoting their builds, videos, and anything else they share you find useful. You can also check this user's page for more build guides.
There are indeed many ways to play Crustle in Pokemon Unite, and you can find more builds here, as well as detailed information about Crustle's moves and the items you can assign to it.
Perhaps you have a better build in mind? Try creating your own!
For more information on build guides, check out our detailed FAQ page to answer any more questions you may have.