Pancham @ Eviolite  
Ability: Mold Breaker / Iron Fist  
Level: 5  
EVs: 220 HP / 100 Atk / 100 Def / 52 SpD / 12 Spe  
Impish Nature  
- Drain Punch  
- Knock Off  
- Zen Headbutt / Gunk Shot  
- Parting Shot / Ice Punch
Set Details:
Drain Punch provides Pancham with some longevity. Knock Off hits Ghost and Psychic types that can take Drain Punch and removes items, making it easier to wear down switch-ins. Zen Headbutt hits opposing Pancham and Poison-types such as Croagunk, which would otherwise wall Pancham. Alternatively, Gunk Shot OHKOes all variants of Cottonee. Parting Shot allows Pancham to pivot and generate momentum. Alternatively, Ice Punch lets Pancham beat Sandshrew and provides a 2HKO on defensive Cottonee. Mold Breaker allows Knock Off to remove the item of Sticky Hold users like Shellos and Trubbish and threatens Sturdy Shell Smash sweepers at full health; on the other hand, Iron Fist makes Drain Punch and Ice Punch hit a little harder, but it should only be used when packing Ice Punch. EV Investment in HP and Defense helps Pancham survive Dual Wingbeat from Archen and lets it switch into Sandshrew and Diglett-Alola's Earthquake easier; the EV investment also helps Pancham fight opposing Pancham. 100 EVs in attack make your attacks hit harder against Sandshrew and Cottonee and makes Zen Headbutt KO 12 Defense Croagunk 15/16 times. 12 Speed EVs allows Pancham to outspeed Shellos and Lileep, as well as uninvested Cufant. More offensive EV spreads are definitely possible and viable, but it makes Pancham more vulnerable to being worn down.
Team Options: 
Pancham is one of the best Pokémon in the tier and fits on just about any team. Fast offensive Pokémon like Scorbunny and Stunky appreciate Pancham removing opposing Eviolites and can make up for Pancham's average Speed. Helioptile can switch into Frillish trying to burn Pancham, as it is immune to Scald and Hex and doesn't mind Will-O-Wisp much. Additionally, it can alleviate Pancham's mediocre Speed with Glare. In return, Pancham can break through Munchlax and Lileep, which trouble Helioptile. The two can also form a pivot core. Frillish benefits from Pancham's general bulk and resistance to Knock Off, as well as it's ability to hit Helioptile. Setup sweepers such as Shell Smash Omanyte can come in safely through Pancham's pivoting and take advantage of the lowered attacking stats to set up safely. 

Pancham @ Eviolite  
Ability: Mold Breaker
Level: 5  
EVs: 180 Atk / 20 Def / 52 SpD / 252 Spe  
Jolly Nature  
- Swords Dance  
- Drain Punch
- Knock Off  
- Zen Headbutt / Gunk Shot / Ice Punch
Set Details: 
Swords Dance increases Pancham's damage output and limits its switch-ins even further. Drain Punch is Pancham's most consistent STAB attack and prevents foes from wearing Pancham down when it tries to clean.  Knock Off is Pancham's best coverage move, as it hits Ghost-types immune to Drain Punch. Zen Headbutt hits Poison-types and opposing Pancham super effectively. Alternatively, Gunk Shot OHKOs Cottonee. Meanwhile, Ice Punch can also KO Cottonee, as well as some variants of Sandshrew, after a Swords Dance. Mold Breaker can help break through Sturdy Tirtouga and Dwebble trying to stop Pancham from sweeping. Maximum Speed and Attack investment make Pancham as threatening offensively as it can be.
Team Options:
Grubbin is a great partner for this Pancham set, as it helps it bypass faster opponents through Sticky Web and Thunder Wave and provides a safe switch-in through Volt Switch. Other offensive Pokémon struggling with Sandshrew can benefit from Pancham's ability to break through it, like Nasty Plot Stunky and Life Orb Magby. Special attackers like Elekid value Pancham's ability to beat Munchlax. In return, Pancham appreciates Elekid's ability to force out threats faster than Pancham and provide a safe switch-in with Volt Switch. Normal-resistant Pokémon such as Cufant and Omanyte can switch into Meowth, which can threaten to stop Pancham with Fake Out.