lυffγ˚. ᵎᵎ

More mature: He is still cheerful and spontaneous, but now he thinks more before acting when the situation is really serious.

Protector: He cares much more about the safety of the people he loves and takes on the responsibility of keeping his companions safe.

Self-assured: He no longer needs to constantly prove his strength. He knows what he is capable of.
Loyal to the extreme: His friends are still the most important thing to him.
Determined: Once he sets his mind to something, it's virtually impossible to change his mind.

Sincere: Continues to say exactly what he thinks, without masks or ulterior motives.
Understanding: He understands other people's feelings better than before, although he still has difficulty picking up on romantic hints.
Optimistic: Retains his ability to inspire hope even in the worst of times.

serious when necessary