Short version: they looked a lot more like 
than 
. Most accounts of Vikings that are contemporary of the centuries where shield-Danes and spear-Danes went "a-Viking" describe distinctly hygenic people that bathed and took care of their hair (and wore it long).
EDIT: I thought I could have a little fun with a very loosely associated Beowulf reference to Danes (and even more loose associations with Geats therein too) but I got the 
experience for doing so. 
They didn't have Hitler Youth fades with lazy and sloppy beard fusions. Period. Full stop. Stop doing that. Looking right the fuck at you too, P R E S T I G E T V. 
Elli is actually encountered by Thor on his journey to Utgard with Loki. Shes not actually a person, or a god, but something else.
The Jotunn leader of Utgard, Utgard-Loki, challenges Thor, Loki and their servant Thjalfi to various games and each loses. Loki and the Jotunn Logi ate from a trough of meat, and though they both met in the middle, Logi had consumed the entire trough itself as well as all the meat and bones. Thjalfi raced against the Jotunn Hugi, but no matter how fast he ran Hugi always arrived at the end almost instantly. Then Thor was given a horn of mead and told to drain it in three gulps or less, but he could not do it despite taking massive drinks and nearly drowning himself in it. Then he was shown Utgard-Loki's cat and asked to lift it up off its feet, but he could only get it off three paws. By the Utgard-Loki was very unimpressed with the gods and he decided to give Thor an easy test: to wrestle an old woman named Elli. So Thor and Elli wrestled, but he could not beat her despite being the strongest of all the gods, and she brought him down to one knee.
By the end of the story, all three are disheartened by their losses, but as they leave Utgard-Loki explains that he used magic to trick them. Loki was only just beaten by Logi, who is in reality wildfire, and was able to burn through all the food and the wood of the trough itself. Thjalfi raced against Hugi, who is thought, and no one can run faster than they can think.
But it was Thor who was most deceived. When Thor drank from his horn, the other end was in the sea, and so thors massive gulps, which could never have emptied the entire ocean, still removed so much water that he created the tides. When Thor lifted the cat up off only 3 of its paws, he was really lifting Jormungandr, the entire world serpent, up out of the ocean. And when Thor wrestled with Elli, he was grappling with old age, and in spite of the inevitability of old age taking us all, Elli was only able to bring Thor to one knee.
At this point Thor was quite mad at Utgard-Loki, and so he decided to kill him, but by the time he had raised Mjölnir the Jotunn king and all of Utgard had disappeared into thin air.
Yeah, I've always loved this story. I like how metaphysical these stories get, like Loki and Thor are fighting personifications of abstract concepts.
I've also thought it's interesting how many stories there are of the Norse gods losing in battles, or getting tricked by something. Like when Thor meets the ferryman Hárbarðr, Thor doesn't defeat him, he sulks away in shame after getting insulted repeatedly.
I love these stories lmao