The Aura Pokémon will be even more potent this time, says Sakurai.
http://www.nintendoworldreport.com/news/36447
Lucario is the latest veteran fighter to be confirmed as a returning character in the upcoming Super Smash Bros. for 3DS and Wii U.
The Fighting/Steel Pokémon, who falls at #448 in the National Pokédex, made his series debut in Super Smash Bros. Brawl on Wii, in which he was known for his signature Aura ability that increased his attack power as he sustained more damage.
According to a Miiverse post by series director Masahiro Sakurai, the influence of Aura has been boosted, making Lucario a particularly strong character when his damage percentage is high.
Lucario becomes the 22nd character in the new Super Smash Bros. roster, joining up with numerous veterans in addition to newcomers Rosalina, Mega Man, Villager and Wii Fit Trainer.