Here's a pic about Mario, Luigi, Kirby and Tiff jump in the Time Travel Pipe to go back in the time where the legendary treasure is hidden. Unlike Super Mario Bros Z Episode 7, the past is made of 16 bit with Super Mario World Style, except Kirby (the sprite is from Kirby Super Star).
Also, Tiff transforms into her original form from Hoshi no Kaabii Pilot Episode.
SMW Classic Tiff sprites by
Mario, Luigi, Kirby and Tiff (c) Nintendo, HAL Laboratory and Warpstar INC
Super Mario Bros GT The Grand Adventure aka SMBGT TGA (c) Me ~xXKaijuKing91Xx