¿Who is stronger, Onslaught or Trunks?

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.

Trunks is a pivotal character in the "Dragon Ball" series, known for his distinctive role across various timelines. He is the son of Vegeta and Bulma, embodying a unique blend of Saiyan strength and human ingenuity. Trunks first appears as a mysterious youth from a dystopian future, traveling back in time to warn the Z Fighters about the impending threat of the Androids. This "Future Trunks" wields a sword and exhibits a serious demeanor, shaped by the hardships of his timeline. In contrast, the present timeline introduces Trunks as a spirited and adventurous child, often seen alongside his best friend, Goten. Both versions of Trunks possess the ability to transform into a Super Saiyan, showcasing remarkable combat skills and resilience. His character adds depth to the series by exploring themes of destiny, courage, and the impact of choices across different realities.