Láeg, or Lóeg, son of Riangabar, is the chariot

Chariot

The chariot is a type of horse carriage used in both peace and war as the chief vehicle of many ancient peoples. Ox carts, proto-chariots, were built by the Proto-Indo-Europeans and also built in Mesopotamia as early as 3000 BC. The original horse chariot was a fast, light, open, two wheeled...

eer and constant companion of the hero Cú Chulainn

Cú Chulainn

Cú Chulainn or Cúchulainn , and sometimes known in English as Cuhullin , is an Irish mythological hero who appears in the stories of the Ulster Cycle, as well as in Scottish and Manx folklore...

 in the Ulster Cycle

Ulster Cycle

The Ulster Cycle , formerly known as the Red Branch Cycle, one of the four great cycles of Irish mythology, is a body of medieval Irish heroic legends and sagas of the traditional heroes of the Ulaid in what is now eastern Ulster and northern Leinster, particularly counties Armagh, Down and...

 of Irish mythology

Irish mythology

The mythology of pre-Christian Ireland did not entirely survive the conversion to Christianity, but much of it was preserved, shorn of its religious meanings, in medieval Irish literature, which represents the most extensive and best preserved of all the branch and the Historical Cycle. There are...

. His horses are Liath Macha and Dub Sainglend

Liath Macha and Dub Sainglend

Liath Macha and Dub Sainglend are the two chariot-horses of the hero Cúchulainn in the Ulster Cycle of Irish mythology....

.

Cú Chulainn sends him to the Otherworld

Otherworld

Otherworld, or the Celtic Otherworld, is a concept in Celtic mythology that refers to the home of the deities or spirits, or a realm of the dead.Otherworld may also refer to:In film and television:...

 with Lí Ban

Lí Ban

Lí Ban is an "Otherworldly woman" from Irish Mythology, best known as the sister of the sea goddess Fand, and perhaps an early sea deity herself....

, sister to Fand

Fand

Fand is an early Irish sea goddess, later described as a "Queen of the Fairies". Her name is variously translated as "Pearl of Beauty" or "A Tear"...

, and he brings back bountiful descriptions of the Otherworld in the tale Serglige Con Culainn

Serglige Con Culainn

Serglige Con Culainn , also known as Oenét Emire is a narrative from the Ulster Cycle of Irish mythology. It originated in the 10th and 11th centuries, and survives in the Book of the Dun Cow, which combines two earlier versions. It tells of a curse of illness inflicted upon the hero Cú Chulainn...

(The Sickbed of Cúchulainn). In the tale of Cú Chulainn's death he is killed by Lugaid mac Con Roí

Lugaid mac Con Roí

In the Ulster Cycle of Irish mythology, Lugaid mac Con Roí was the son of Cú Roí mac Dáire. He was also known as Lugaid mac Trí Con ....

with a spear intended for Cú Chulainn.