How do you unlock Lucario in ssbb?

To get Lucario is simple but will take a long time to do so. (Unless you are veternen like me that is.) To get him you will have to get Lucario to join your journey to defeat the Supspace army in the storyline action game Subspace Embbasy. I know there are other way but I forgot how many matches you have to do to unlock him. To get Lucario is simple but will take a long time to do so. (Unless you are veternen like me that is.) To get him you will have to get Lucario to join your journey to defeat the Supspace army in the storyline action game Subspace Embbasy.I know there are other way but I forgot how many matches you have to do to unlock him.