The cartoon Viking in question is Hagar, a character from the comic strip 'Hagar the Horrible' created by Dik Browne. Hagar is a large, red-bearded Viking who is often seen wearing a horned helmet and carrying a battle axe. He is known for his love of food, drink, and adventure, and is often accompanied by his faithful dog Snert. Hagar is a beloved character who has been featured in comics, books, and animated television shows since his debut in 1973.