Super Mario - Metal Mario's depictions

This also extends to Mario himself, in a way.

In his home series:
-Happy-go-lucky
-Usually defaults to a smile
-His official renders most often show him having the time of his life
-Makes all sorts of funny noises (e.g. wahoo, yahoo, yippee, hoo-hoo)

In Smash Bros. post-Brawl:
-Serious
-Rarely cracks a smile
-All of his official art renders show him ready to kick ass
-Funny hoo-hoo man noises, while still there, are rather scaled back

Metal Mario in Mario Kart:

Metal Mario in Smash: