(i will write some of the quotes from the mario movie here)

In an insane world, it is the sane who are crazy.

Time, like hope, is an illusion.

There's no escape. The only hope is the sweet relief of death.

Life is sad. Prison is sad. Life in prison is very, very sad! (while blowing bubbles)

Finally... Mercy... (After Kamek announced the prisoners will be sacrificed)

Wheee! (While the cages lower into the lava)

Boooooo. - (When set free from his cage)

(and also he is always smiling)