Ник Картер

Nick Carter-Killmaster is a series of spy adventures published from 1964 until 1990, first by Award Books, then by Ace Books, and finally by Jove Books. At least 261 novels were published. The character is an update of a pulp fiction private detective named Nick Carter first published in 1886.
No actual author is credited for the books, with the Nick Carter name being used as a house pseudonym. Volumes varied between first person and third person narrative. Authors known to have contributed entries in the series are Michael Avallone, Valerie Moolman, Manning Lee Stokes and Martin Cruz Smith
The title character of the series serves as Agent N3 of AXE, a fictional spy agency for the United States government. The novels are similar to the literary James Bond novels - low on gadgets, high on action. Sexual encounters in particular are described in detail.
The definitive description of Nicholas J. Huntington Carter is given in the first novel in the series Run, Spy, Run. Carter is tall (over 6 feet / 1.83 m), lean and handsome with a classic profile and magnificently muscled body. He has wide-set steel gray eyes that are icy, cruel and dangerous. He is hard-faced, with a firm straight mouth, laugh-lines around the eyes, and a firm cleft chin. His hair is thick and dark. He has a small tattoo of a blue axe on the inside right lower arm near the elbow - the ultimate ID for an AXE agent. At least one novel states that the tattoo glows in the dark. Carter also has a knife scar on the shoulder, a shrapnel scar on the right thigh. He has a sixth sense for danger.
Carter practices yoga for at least 15 minutes a day. Carter has a prodigious ability for learning foreign languages. He is fluent in English (his native tongue), Cantonese, French, German, Hungarian, Italian, Portuguese, Putonghua (Mandarin), Russian, Spanish and Vietnamese. He has basic skills in Arabic, Hindustani, Romansch, Swahili, and Turkish. In the early novels, Carter often assumes a number of elaborate disguises in order to execute his missions.
The name Nick Carter was acknowledged by the series as having been inspired by the early 20th century pulp fiction detective of the same name in the 100th Killmaster volume (labelled Nick Carter 100) which included an essay on the earlier Nick Carter and included a Nick Carter detective short story alongside a Killmaster adventure.