Manectric discharges strong electricity from its mane. The mane is used for collecting electricity in the atmosphere. This Pokémon creates thunderclouds above its head.
– Pokémon Alpha Sapphire Pokédex
Mega Manectric looks too top-heavy imo. It’s also way too spikey. I get what they’re trying to go for, having it look like a lightning bolt, but the fur part also looks really stiff, as if the poor Pokemon can’t actually move its body.
Stat-wise, it gains more Speed and Sp Attack as well as slightly more Def and Sp Def. It gets Intimidate when it mega evolves, which I’m sure is helpful, but I feel like Lightning Rod is more useful.