Frank Garrett is a British Foreign Office spymaster.
Of course his calling card, if he had one, would not list him as a spymaster, per se, but rather just that he was with the Foreign Office but those in the know are well aware of the fact that he is every inch a master of intrigue both at home and abroad and is decidedly "the efficient head of the Foreign Officer Intelligence".
Not that Garrett would ever consider being abroad anymore. He does not like even leaving his personal offices let alone leaving London or, God forbid, England. That is for those working for him, willingly with the pay packets to prove it or pressed into action by circumstances; Garrett would not particularly care which.
Garrett holds the rank of Colonel; when or how he achieved that rank is not revealed but he did see action abroad during the Great War. It was during that war Garrett became deeply involved with the British Secret Service but then as well as now, he is officially connected to the Foreign Office. It is said that back then he would be involved in a good number of "exciting times" but now Garrett prefers to stay at home.
He is described as a "little sandy man with bottle-brush hair and small grey eyes like points of polished steel", along with :his short grizzled hair stood up all over his head like a ten days' beard". He is seen at that time wiping his face with a red bandanna, an act he will be noted doing on other occasions.
He is also seen wearing, well, interesting suits. One example would be a mustard-colored tweed suit and a "green tie decorated with crimson horseshoes". The suits that Garrett will sport from time to time have one thing in common, according to the various people who we will watch having dealings with Garrett; the suits are all of highly questionable value. His shoes are similarly disreputable and prone to be yellow in color, his socks also known to be interesting (one time they are violet with marmalade-colored clocks on them). "When Garrett wants to disguise himself, all he has to do is to leave his bandanna at home and buy a neat gent's suiting", it is said more than once about his clothing choices. "He wore, as usual, the sort of clothes that make you wonder why any tailor capable of perpetrating them should have escaped being lynched."
To say that Garrett can be brusque with people would be putting it mildly. "There is no respect of persons in Garrett; he says what he likes and you can take it or leave it. He doesn't care a damn either way." Garrett is frequently prone to slapping his knee when he lets out a hoarse, short barking laugh or barks out an order (Garrett is fond of 'barking' one way or another).
[I would like to note here that Garrett, on a couple of the adventures he will be spearheading, has his name spelled with an 'e' as the last vowel and with an 'a' in a couple more. It is a trifle odd, that.]