Q&A for How to Get Wario in Super Mario 64 DS

Complete all the levels, doing all of the side quest stars like getting the 8 red coins.

Once you unlock Mario by collecting 8 stars and beating Goomboss, go to the middle circle in the castle and press x until you see your back up close and look up, then go to the center ring and press the big red switch and that will make the blocks appear solid.

No, he was originally supposed to be in the game, but he was scrapped. This means that the final character door does not get you to him; instead, if you collect all glowing rabbits, the final one will give you the key and unlock a power star in the fourth room.

Get behind GoomBoss, and swallow a goomba. Hit R to lay an egg, and throw it at GoomBoss. Do this 3 times to beat him.

Once you unlock the catwalk, hit the block the Koopa Bro was working on and talk with her two times.

No, you cannot cheat to get all 150 power stars.

Defeat Bowser a second time. Once you do that, you get the key to those big locked doors up the stairs in the main room.

Try reading How to Get Luigi on Super Mario 64 DS for some information on how to do that.

No, you don't have to jump through the painting in any specific way in order to unlock Wario.

In the DS version, there are: More levels, more stars to collect, more characters to unlock and play and some of the glitches in the N64 version have been patched.