Spider-Man No Way Home character info: Sandman

Flint Marko is an on-and-off petty crook who was responsible for the death of Peter Parker's uncle. He is portrayed as a tragic and sympathetic criminal who is desperate to raise money for his critically ill daughter, Penny. After breaking out of prison, he visited his family, but his upset ex-wife Emma forced him to leave.

While on the run from police, Flint fell into the particle accelerator that bonded him with sand at the molecular level, giving him sand-based shapeshifting abilities, becoming the Sandman in the process.

POWERS AND ABILITIES

Sand/Earth Manipulation: Following the incident in which he fell into a particle accelerator, Marko gained the ability to transform his body. He can will his body to be hardened, compacted, dispersed or shaped, or a combination of those qualities, an Earth manipulation of sand and rock particles. His mass, strength and shape shifting ability correspond to the number of sand and rock particles that comprise him. The more he incorporates (nearby) sand grains and rock granules into his body, the more those qualities are enhanced. 
 

Shapeshifting: Due to his human body destroyed through the process, Marko can change the color of sand. His striped shirt and cargo pants are colored sand to make him appear as if he wears clothes.

Regenerative Healing Factor: Since Marko was turned into sand, he can use it to heal any wounds that he has in seconds. He also has no need of food, water or oxygen to survive.

Weapon Manifestation: Sandman can mold his arms and hands into shapes, such as a mace or a sledgehammer.
 

Size manipulation: Marko is able to stretch his sand molecules, growing to double his size. Density manipulation: Marko can manipulate his sand to control his density, to make himself hard as rock or thin as sand. 

Flight: He can turn himself into a sandstorm, which enables him to fly great distances and to suffocate his enemies. He can also project sand particles outward at high speeds.

Thermokinesis: temperature does alter the Sandman. At 3,400 degrees Fahrenheit his body turns into glass, also a form he can control. Unlike the Sandman's fast transformation from sand to glass, his transformation from glass to sand takes time.

Vulnerable to water: although Sandman is invulnerable to most physical attacks, water or poison can cripple his body mass and cause him to disintegrate.