Azen doesn't sandbag.I don't know what it is about Lucario, but other than Coach's they all seem to play the same, which is pretty badly. Even Azen's didn't seem too tricky when Will_ and I played him and Chu in doubles, though that could have been sandbagging.
Lucario isn't a complicated character, but he is a pretty good one. Roll spam covers more distance than most characters' running. F-Smash is close to unpunishable.
The main thing that keeps Lucario going is that it's incredibly hard to hit him on the ground. It's very boring fighting a defensive Lucario.