¿Who is stronger, Onslaught or Black Panther?

Onslaught is a comic book character created by Marvel Comics and is known to be one of the publisher's most powerful and feared villains. He is a cosmic being created by merging the minds of Charles Xavier and Magneto, two of Earth's most powerful mutants. Onslaught has a number of supernatural powers, including the ability to manipulate people's minds and behaviour, superhuman strength and the ability to manipulate magnetism. He is also virtually indestructible, making him a formidable foe for any hero who confronts him.

Black Panther is a character in the Marvel Cinematic Universe (MFCU) who was first introduced in the 2016 film Captain America: Civil War. His real name is T'Challa and he is played by the late actor Chadwick Boseman. T'Challa is the king of Wakanda, an African country that has managed to hide from the outside world thanks to its advanced technology and its deposit of Vibranium, a valuable mineral. In addition to being a wise and just ruler, T'Challa is also the protector of Wakanda and its people as the Black Panther. As Black Panther, T'Challa possesses superhuman abilities granted by a special herb and Vibranium ore. His abilities include strength, speed and endurance superior to those of an ordinary human being. He is also a highly skilled combatant, capable of defeating multiple opponents at once, and has advanced Wakandan technology, such as his Vibranium suit, retractable claws and propulsive boots. Black Panther's history in the UCM includes his role in the fight against the cosmic villain, Thanos, and his struggle to protect his country and people from external and internal threats. In addition, T'Challa has also had to face personal challenges, such as the duel for the crown of Wakanda and the revelation of his family's dark secrets. Black Panther has become one of the most popular characters in the MCU and has been praised for his positive portrayal of African culture and his impact on diversity and inclusion in the film industry.