Thor actually has red hair
Loki isn't actually his brother
Loki once decided to shapeshift into a mare(Female horse) and "had fun" with a stallion. The result of that was Slepnir, an eight-legged horse who guided Odin's chariot.
Thor has two goats to pull his thing, their names are Otis and Marvin
Frey, the god of spring, summer, and wealth, had a sentient talking sword called Sumarbrandr, or The Sword Of Summer
Loki has several children, including Fenris wolf, Hel, and Jormungandr
There is an evil squirrel that runs up and down Yggdrasil saying nasty things
That's all I have for you for now :)