Shadow Absol

A high-damage DPS Dark attacker, Shadow Absol provides some value with mono-dark typing, resisting common coverage moves like Shadow Ball and Psychic. The biggest problem is that it can’t really provide significant niches over the more flexible Dark Types that compete with it durectly. Aside from that, Shadow Absol is still a great dark type attacker, able to fulfill roles against Ghost and Psychic Type raid bosses. 

Best PvE Offensive Moveset

• Snarl is superior to Psycho Cut due to having STAB and more relevant coverage.
• Dark Pulse is superior to both Megahorn and Thunder for similar reasons.
• Payback is a step down. 

Best PvE Defensive Moveset

• Snarl is superior to Psycho Cut due to its significantly higher base damage.
• Dark Pulse is superior to Megahorn due to having STAB, an earlier dodge window, slightly better coverage, and a lower energy cost.
• Payback is a downgrade due to it being a 1-bar move. 
• Thunder also has an early dodge window, but is underwhelming in every aspect.

Snarl falls behind Psycho Cut slightly in energy gains, but offers significantly more damage output thanks to STAB. The latter can be chosen if that slightly extra energy generation is needed. 

Dark Pulse costs the least amount of energy and benefits from STAB to provide Dark-type coverage. Payback is less desirable due to its greater energy cost. Megahorn provides Bug-type coverage and costs slightly less energy than Thunder, while the latter offers Electric-type coverage. Either can be chosen depending on what coverage would be more preferable.