Magnus

Magnus is the younger son of Ragnar and Hertha and is an excellent lumberjack and carpenter, although he isn't as skilled as Ragnar. Ragnar also claimed he's one quarter Giant. He's from the South Blue, but was kidnapped along with his mother by the Steam Pipe Pirates three years ago. He was saved by the Devil's Luck Pirates and is helping his mother build up an Ragnarton.

Appearance
Magnus has long, dark hair in a ponytail and towers over Ragnar. He has trouble finding shirts that fit him, but wears dark pants fitting of a woodcutter.

Personality
Magnus is a regular kid on the inside who is friendly to everyone he meets. He loves cutting wood and making houses. His voice also doesn't match his body, as it's still the voice of a 12 year old.

Overview
Magnus doesn't have any special combat related abilities, besides being tall and very strong.

Construction
Magnus is a very capable craftsman who can make houses in minutes and chop down trees even faster.

Strength
Magnus' physical strength is shown to be on the level of his father, despite how young Magnus is. He has bear hugged Ragnar to the point where has to ask his son to let him go, as he can't escape. Magnus could also beat the majority of men in Atlas, a village of lumberjacks, in arm wrestling contests. This could also be due to his Giant heritage and his occupation as a lumberjack.

Ragnar
Magnus loves his father dearly and respects him greatly. This was shown when Magnus wanted to fight the Timber Lord, but Ragnar refused and Magnus obeyed his father.

William
Magnus seems to respect William as a man who is strong enough to lead his father and even calls him Uncle William.

Hertha
Magnus loves his mother as much as his father and stays with her to help rebuild L'Arbor and save the sacrifices.

Ragnar
Magnus loves his father to the same degree as Ragnar loves his son. When they finally reunited on L'Arbor, both were moved to tears.

Ragnar IV
Very little is known about Ragnar's first son in general, including how the two brothers view each other.

Spruce
Magnus and Spruce are great friends, as Magnus loves cutting trees and Spruce loves making trees with his Devil Fruit ability.

Eustass Valve
As the one who sold him and his mother into slavery, Magnus was relived to hear that he was dead.

The Timber Lord
Magnus hates the Timber Lord as he kept him as a slave to Chuck for two years and almost killed his mother.

History
Magnus was born 12 years ago to Ragnar and Hertha in Atlas and worked as a woodcutter with his father. However, three years ago he was kidnapped by the Steam Pipe Pirates and sold into slavery, with his owner being the Timber Lord.

Episode 13
Magnus was trapped by the Timber Lord's Devil Fruit for three years, before the Devil's Luck Pirates saved him.

Episode 14
The Devil's Luck Pirates defeat the Timber Lord and save L'Arbor.

Episode 15
In the aftermath of the battle Magnus stayed on L'Arbor with Hertha and is currently helping to rebuild the island.

Currently Magnus is playing with all of his friends on L'Arbor.

Trivia

 * In Latin "Magnus" means great, noble, or mighty.
 * Magnus is capable of building about two houses in 10 minutes.