Lakitu first appeared in
Super Mario Brothers (and later in
Super Mario Brothers Deluxe) where he first performed his trademark
spiny-toss. He returned in
Super Mario Brothers 3 (and, again, later in
Super Mario Advance 4) where he continued to toss
spinys, but also green
spiny eggs that would only bounce repeatedly instead of hatching. He returned in
Super Mario World (and it's
Game Boy Advance port
Super Mario Advance 2) and this time around
Mario and
Luigi could stomp him and steal his cloud. Lakitu was also seen fishing from his cloud using a 1-up for bait. He was also seen operating his
spiny toss from
pipes. Before Lakitu learned to master the
clouds he hid behind ledges in
Super Mario World 2: Yoshi's Island (and it's GBA rendition
Super Mario Advance 3) where he tosses
spinys with amazing accuracy. In fact, a little target X would appear where the
spiny was to land.
Super Mario 64 saw him controlling the
camera, and in the
Super Mario Kart series he's seen holding the stoplight and the Lap # signs.
In the Super Mario Brothers comics Lakitu is seen as a sneaky thief. He steals all sorts of things from Bowser and hides them in his cloud. However, since he's such a suck up to the Koopa Troop, Bowser never suspects that the loyal Lakitu could be a thief. At one point Lakitu even manages to steal Luigi's clothes and dons the green hat, but because Lakitu is being so nice to Luigi, he doesn't even notice.
I always knew Mario was the smarter brother.