G is for...

The GAME
The term used to describe the ongoing battle between Immortals to get 'a head' of the others, so to speak.

The GATHERING
The period when all surviving Immortals will be drawn together to battle for The Prize (see P).

GLENFINNAN
Birthplace to the MacLeod clan. It's situated on the shores of Loch Shiel, in the highlands of Scotland. The only time the Highlander TV series actually filmed in Scotland was for the fourth-season opener (D1, 'Homeland').

GRAYSON
A former student of Darius who was disgusted by his former mentor's move away from violence after a 'Light Quickening' (see L) 1,500 years before. Grayson had been killing Darius' students - mortal or Immortal - ever since, until he came up against one Duncan MacLeod (A13, 'Band of Brothers').

H is for...

Victor HANSEN
Charming - but utterly ruthless - Immortal who attempts to seduce Amanda into stealing an expensive diamond for him in return for, well, nothing really as he also wants her head (R11, 'The Devil You Know').

HOLY GROUND
No Immortal may take the head of another on Holy Ground. There is one recorded instance of this happening, and that was at Pompeii. You can guess when.

Rebecca HORNE
A sort of Mother Teresa to younger Immortals (including one 9th Century urchin better known as Amanda)... only without the wimple. One of these, Luther - see L - took her head. Big mistake when Dunc's around (B19, 'Legacy').

James HORTON
A Watcher who decided that all Immortals were evil and needed be wiped out through his renegade organisation (A22, 'The Hunters'; B1, 'The Watchers', and so on).