Tex's closest friend in almost every adventure, since his enlistment as a ranger, is Kit Carson. A fundamental role has been held by Tex Willer's son, Kit Willer, and by the Navajo warrior Tiger Jack. Other recurring characters include El Morisco (a kind of warlock-scientist of Arabian origin), the Mexican Montales (originally an outlaw that fought against a corrupted government, after he became a politician), the Canadian trapper Gros-Jean, the Irish boxer Pat Mac Ryan, the red coat Jim Brandon, police officer Tom Devlin, the Apache chief Cochise, and the wizard Navajo Red Cloud.
Tex Willer's nemesis is Mefisto, a wizard who practices dark magic. Other enemies met along the way are Yama (Mefisto's son), The Black Tiger (a Malaysian prince who hates the white race and wants its annihilation in the USA), and Proteus (able to shapeshift his own face, and impersonate other people).
Tex Willer character started coming in South India through Lion comics in Tamil language and it is still a very popular character.
In Argentina, Tex was published in the 50s by Editorial Abril in his weekly magazine Rayo Rojo, with the name of Colt Miller.
In Brazil, Tex has been published uninterruptedly since 1971. Currently, it is being published by Mythos Editora
In Finland Tex Willer was published 1953–1965. After a break of five years, Tex Willer has been published continuously since 1971. The series is still popular and 16 numbers are published a year.
In Norway Tex Willer has also run continuously since 1971, with from 11 to 17 numbers (on average 120 pages) issued a year.
In the 70s a Tex series was published in Israel, reprinted several times since in limited editions, latest one in 2007.
In the late 60s, 70s, and 80s was published in former Yugoslavia, and was very popular among other Bonelli characters such as Zagor.
In 90s after the break-up of Yugoslavia Tex Willer starts publishing in Croatia with various publishers in different forms.

site unofficial of Tex Willer