Manectric @ Choice Scarf
Ability: Lightning Rod  
EVs: 252 SpA / 4 SpD / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Volt Switch  
- Overheat  
- Switcheroo / Hidden Power [Ice]
- Thunderbolt

Manectric @ Firium Z  
Ability: Lightning Rod  
EVs: 252 SpA / 4 SpD / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Volt Switch  
- Overheat  
- Hidden Power [Grass] / Hidden Power [Ice]
- Thunderbolt

Additional move options: Signal Beam, Sleep Talk, Thunder
Additional item options: Choice Specs, Life Orb, Expert Belt, Electrium Z
Notes: Manectric is mostly reserved for the role of a scarf, as other Electric types outclass it at other roles.