Tiwaz/Tyr:


Tiwaz

Names: Proto-Germanic: *Tiwaz ("Shining Heaven")
Western Germanic: Eor (Bavarian), Erch (Bavarian), Sahsginot (Old Saxon), Sahsnôte (Old Saxon), Saxneat (Anglo-Saxon), Saxnot (Anglo-Saxon), Seaxneat (Anglo-Saxon), Thius, Tiu, Tiv, Tiw, Wiu (Anglo-Saxon), Zio, Ziu
Northern Germanic: Tý, Tyr
Other: Tiwaz was sometimes referred to with the title "Shining One".
God of: War, Battle, Honour, Sky
Appearance: Tiwaz was often depicted as a strong warrior with one hand and a sword

Tiwaz is believed to have originally been a sky god who also became a wargod; Tiwaz was the patron god of the Saxons who called him Sahsginot (Companion of the Saxons) and in later times his worship was introduced in England by Saxon settlers.
Both Tiwaz and Wodan are wargods but the difference between them is that Wodan is a god of war in its basic form; he enjoys war and is not concerned with the question whether they are needed or not, Tiwaz on the other hand is a god of battle, courage, honour, and heroism; he will only grant victory to those who fight for a righteous cause like for instance a defensive army that fights for its freedom or just simple survival; offensive armies that fight for wealth, power, or glory mostly called upon Wodan for victory.
The exact age of Tiwaz remains a mystery, it is unknown who his parents are and it is even believed that he is of an older origin than Wodan, there are several theories on Tiwaz' origins; some say he is Wodan's brother, others say he is his son and some claim Tiwaz to be one of the Wanen.
Tiwaz is the patron god of the sword and many warriors inscribed his name in runes on their swordblades for good luck and bravery during battle.
He is missing his right hand because it has been bitten off by the wolf Fenrir; when Wodan saw that Fenrir was becoming stronger and stronger he expressed his concern to the other gods and they decided to chain him; they asked a Dwarf to forge a chain that was almost unbreakable and then they took it to Fenrir.
The gods asked Fenrir if he wanted to play a game; they would tie him down with the chain, which is called Gleipnir, and then he could show his strength by breaking it again, Fenrir did not trust the gods and he asked Tiwaz (who was called "Tyr" in Old Norse) to lay his hand into his jaws as a sign of trust; Tiwaz knew that Fenrir would eventually grow too strong and destroy the world if he would not be chained so he admitted; Fenrir could not free himself and he bit off Tiwaz' hand, but the destruction of the world had been postphoned.
At Ragnarök, Tiwaz will fight the giant dog Garm who is the guardian of Helheim (like Cerberus in Greek mythology), he will manage to defeat Garm but afterwards he will die of his wounds.
In many northern European countries Tuesday is named after him, the Tiwaz rune was also connected to him.