Hello everyone! As a physical sweeper, lucario has few overall weakness. Preferably going hybrid Lucario would be the best. Here's my Lucario
EVs- 252 Atk 252Spd
Item-Focus Sash (as a average Pokemon, he doesn't have the best defenses and can be one hitted by ground of fighting moves)
Nature: Quirky, Bashful, Hardy (as a sweeper, lowering any of you stats is the last thing you need, and it is better to have a balanced base for lucario)
Drain Punch: lucario requires some sustain, and drain punch is a great healing move with heal recovery
Aura Sphere: As its signature move, this always hit moves is high in damage, and VERY USEFUL in terms of areas where an enemy has high defense, but low special defence.
Me first: I know, this is wierd, but as a fast Pokemon, me first steals the opponent's move and performs it with 1.5 times more power, allowing lucario to out speed even a priority move, including and enemy's extremespeed
Extremespeed: as a moderately bulky Pokemon, lucario is susceptible to priority moves, and having extremespeed will out speed any move, besides fake out