¿Who is stronger, Lobo or Sandman?

Lobo is a powerful and dangerous character from the DC Universe, first appearing in the DC Comics series "Omega Men" in 1983. He is an intergalactic bounty hunter and assassin, and is one of the most feared and respected figures in the DC Universe. Lobo's story begins on the planet Czarnia, where he was born as the son of a scientist named Professor Velorkam. From a young age, Lobo displayed extraordinary strength and durability, and he quickly rose through the ranks to become one of the most feared and respected bounty hunters in the galaxy. As a result of his unique physiology, Lobo possesses a number of superhuman abilities, including strength, speed, agility, and durability. He is also immune to all forms of injury and disease, and is virtually indestructible. In addition to his physical powers, Lobo also has access to a wide range of advanced technology and weaponry, including his signature spacehog motorcycle and a number of powerful weapons, such as his regenerating chainsaw. Throughout his long and storied career, Lobo has clashed with many of the DC Universe's greatest heroes, including Superman, Batman, and the Green Lantern Corps. Despite their best efforts, these heroes have often struggled to defeat Lobo, making him one of the most formidable and dangerous villains in the DC Universe.

Sandman, also known as William Baker, is a fictional character in the Marvel Comics Universe. Created by writer Stan Lee and artist Steve Ditko, Sandman first appeared in Amazing Spider-Man #4 in 1963. Sandman's powers stem from his ability to transform his body into sand, granting him incredible strength and the ability to reshape his form into various shapes and sizes. His sand form allows him to absorb and repel force, making him nearly invulnerable to physical attacks. He can also use his sand form to travel long distances by riding the wind. Sandman's backstory is complex and often tragic. He grew up in an abusive household, and turned to a life of crime as a means of survival. He was eventually incarcerated in prison, where he underwent an experiment that gave him his sand-based powers. Initially, Sandman was a villain and frequently clashed with Spider-Man. However, he has also had periods of heroism and redemption, most notably when he became a member of the superhero team known as the Thunderbolts. One of Sandman's most notable strengths is his ability to control sand and manipulate the environment around him. He can use his sand form to create weapons, shields, and even control the movement of sand around him to his advantage. His abilities also make him a formidable opponent in battle, as he is able to absorb and redirect attacks. Overall, Sandman's powers and strength make him one of the most unique and interesting characters in the Marvel Universe. His tragic backstory and complex relationships with other characters add depth and nuance to his character, making him a fan favorite.