The numero sign or numero symbol, № (also represented as Nº, No, or No.) is a typographic abbreviation of the word number indicating ordinal numeration, especially in names and titles. For example, with the numero sign, the written long-form of the address "Number 22 Acacia Avenue" is shortened to "Nº 22 Acacia Avenue", yet both forms are spoken long.

Typographically, the numero sign combines the upper-case Latin letter N with a usually superscript lower-case letter o, sometimes underlined, resembling the masculine ordinal indicator. In Unicode, the character is U+2116 № numero sign (HTML: №).

The Oxford English Dictionary derives the numero sign from Latin numero, the ablative form of numerus ("number", with the ablative denotations of: "to the number, by the number, with the number"). In Romance languages, the numero sign is understood as an abbreviation of the word for "number", e.g. Italian numero, French numéro, and Spanish and Portuguese número.

The numero sign, despite its widespread usage internationally, is not a standard alphabetic symbol in virtually all European languages. For example in English, the abbreviation "No." of "numero" is often used in place of the word "number". In US English the number sign, "#", is frequently used instead. In German, the abbreviation for Nummer is "Nr." (with full stop), whereas in Finnish the abbreviation for numero is "nro" or somewhat archaic "n:o" (to distinguish it from a plain no, which is an exclamation roughly corresponding to the English well in "Oh, well" or "Well, let's see").

Leornardo Carrera Lizarraga (born May 14, 1989) is a Mexican luchador or professional wrestler, better known by the ring name Bestia 666. He is currently working for various promotions across Mexico, while also performing in the United States for several California-based promotions. Bestia 666's father is professional wrestler Leonardo Carrera, who performs as Damián 666 and who inspired his son's current character.

Carrera was born to Leonardo Carrera Gómez and Guadalupe Lizarraga on May 14, 1989, in Tijuana, Baja California, Mexico. He studied first in Universidad de las Américas Puebla in San Andrés Cholula, Puebla, but after having some problems with the university's teachers, he switched over to Universidad Autónoma de Nuevo León in Monterrey to study sports science. While studying, Carrera was looking for a career in American football, playing both as a running back and a defensive back, however, he was forced to give up the sport after nagging injuries started to affect his running. Carrera then decided to follow in the footsteps of his father Leonardo, better known as Damián 666, and started training in lucha libre or professional wrestling in Arena México under his father, El Hijo del Gladiador and Skayde.