Marcie Fleach (Hot Dog Water)

Marcie Fleach, better known as "Hot Dog Water", is a friend and former rival of Velma Dinkley. Her cruel nickname supposedly comes from smelling like recycled water used to cook hot dogs.

She was sent to prison for trying to close down an amusement park, was eventually released early, then worked for Mr. E. During this time she befriended Velma, gaining membership into Mystery Incorporated as a mole, and temporarily replacing Daphne Blake. When Daphne returned, she was forced to leave and continued working for Mr. E. Sent to Mount Diabla to retrieve a piece of Planispheric Disk, she instead handed the piece to the gang because she couldn't betray Velma, her only friend. Since then she went into hiding, but still manages to help Mystery Inc. in an elaborate scheme, infiltrating Mr. E's vault and stealing his pieces of the Planispheric Disks.

Hot Dog Water was finally captured, but not by Mr. E, instead his partner, Professor Pericles (who had taken over), using her as bait to force Mystery Incorporated to cooperate in his goal of opening the four gates leading to the crystal sarcophagus beneath the town. She turned the tables on the bird so that the gang could proceed to destroy the evil entity trapped inside the crystal sarcophagus. Her victory was short, however, and she was shot to death by the Kriegstaffebots.

After the gang reset history, she was recast as Velma's girlfriend and science partner; who she still affectionately refers to as "V".

Marcie is a skinny teen-aged Caucasian female, with brown hair, which is usually very messy; in loose oily waves held back with plastic barrettes. She wears red-rimmed, armless glasses with yellow lenses. She originally wore a tan hoodie with a white t-shirt underneath, before changing to a brown wool jacket. She also wears a red skirt, striped socks and matching red shoes.

Marcie has a very no-nonsense personality, and shares many of her traits in common with Velma Dinkley such as skills with computer infiltration and research.

Originally, she was very competitive with Velma, the two sharing a mutual strong disliking of one another and a rivalry in the science club. This changed, however, when they bonded after both working together for Mr. E. When she got cruelly kicked out, Marcie became sad and lonely, yet was still loyal towards Velma and thought of her as a friend.

She affectionately refers to Velma as "V" after befriending her, indicating she can be a very loyal person despite her cold personality.

She is good with computers, a brilliant amateur chemist, and apparently a not-inconsiderable gymnast given her infiltration of Mr. E's Destroido base, and her uses of the Manticore and Dark Lilith suits.