¿Who is stronger, Apocalypse or Buu?

Apocalypse is a powerful and malevolent character from the Marvel Universe, first appearing in the Marvel Comics series "X-Factor" in 1986. He is a mutant with vast and varied powers, and is one of the greatest threats faced by the X-Men and the Marvel Universe. Apocalypse's story begins in ancient Egypt, where he was born as the son of the wealthy merchant En Sabah Nur. From a young age, En Sabah Nur displayed extraordinary powers and abilities, including strength, speed, agility, and regenerative powers. As he grew older, En Sabah Nur began to embrace his powers and the idea of survival of the fittest. He came to believe that only the strongest and most powerful beings should survive, and that the weak and unworthy should be cast aside. This belief led him to embrace the name Apocalypse, and he began a quest to conquer the world and impose his will on all living beings. As Apocalypse, the character has access to a wide range of powers and abilities, including superhuman strength, speed, agility, and durability. He also has the ability to manipulate energy and matter, allowing him to create and control powerful energy blasts, teleport himself and others, and even change his own physical form. Throughout his long and storied career, Apocalypse has clashed with many of the Marvel Universe's greatest heroes, including the X-Men, the Avengers, and the Fantastic Four. Despite their best efforts, these heroes have often struggled to defeat Apocalypse, making him one of the most formidable and dangerous villains in the Marvel Universe

Majin Buu is a pivotal antagonist in the "Dragon Ball" series, introduced during the "Majin Buu Saga" of "Dragon Ball Z." Created by the dark wizard Bibidi, Buu is an ancient entity with immense power and a malleable, pink physique. Throughout the series, Buu undergoes several transformations, each altering his personality and power levels, including Innocent Buu, Evil Buu, Super Buu, and Kid Buu. His abilities are vast and versatile, encompassing regeneration, absorption, and transmutation, such as turning adversaries into sweets. Despite his initial role as a villain, aspects of Buu's character, particularly in his Innocent form, display a capacity for change and even benevolence. This complexity adds depth to his character, making him one of the most memorable antagonists in the "Dragon Ball" universe.