In the Beta of Luigi's Mansion there were many unused items and ghosts, including unused Portrait Ghosts. There was lots of talk about the Safari Room Boss ghost that never made it into the final game and was only mentioned in Nintendo Power and on the internet, also there was never an in-game screenshot of the ghost. But there is very good proof that there was also an unused Portrait Ghost in the Kitchen, but this time there is a screenshot of the ghost (Shown on right)!
The ghost seems to be holding a tomato in his left hand and has a pinkish-red body with a chef's hat on it's head. It's method of attacking Luigi was most likely throwing pots and pans at him, just like in the final game, only no boss ghost. It most likely had 50 HP like all the other portrait ghosts in the beta game. The ghost was most likely removed due to game and/or hardware limitations. That is the only known information about this unused ghost.
This screenshot was obviously taken during very early stages of development. This is shown by the slightly different look of the Kitchen, also the Gameboy Horror and Element Meter are not shown. This could mean that this Ghost was put into the game to test out the mechanics during the beta stage, and taken out for the final version.