Antoon 'Rat' Verlegh (1896 – 1960) is the clubicon of NAC Breda. From the foundation of NAC in 1912 till his death, he was involved as a player, manager and honoured member of NAC Breda. From the Second World War till his death he was a respected person within Dutch football. His nickname 'De Rat' has its roots in the time Verlegh played for NAC. With his sneaky en fast way of playing, he looked like a rat. Currently the stadium, a fanzine, a few websites and a street are named after him.

The flag is the flag of the city of Breda. It's from the crest of Breda : two lions holding the red shield with the three crosses above the guarding angel.

NAC Fans are called 'Ratten' (=rats), named after the clubicon Antoon 'Rat' Verlegh. The NAC Fans also call themselves 'The Yellow Army’, referring to their club colours.

NAC stands for NOAD ADVENDO Combination. NOAD and ADVENDO were two clubs who merged in 1912 to NAC. The full name of NAC is Nooit Opgeven Altijd Doorzetten (NOAD) Aangenaam Door Vermaak en Nuttig Door Ontspanning (ADVENDO) Combinatie. It is to be believed to be the longest club name in Europe.

NAC has three fanatic sides. The side behind the goal, next to the away block, is called Vak G and it's occupied by fanatic fans, hooligans and former hooligans. Opposite to Vak G, you find the B-Side behind the other goal. The middle two blocks contain seats, but normally the fanatic fans stand there. On the sides, families, children and older people view the match. The last fanatic side is on the Eretribune, block F6 and F7. These blocks contain former B-Side and Vak G people.

According to NAC fans, there is no atmosphere and no real support from Willem II fans. Therefore the club is called 'Stillem II' and the town Tilburg is called 'Stilburg'. 'Stil' is translated from Dutch into English as quiet.

The name of the club refers to the Dutch king Willem II (William the Second) who ruled the Netherlands from 1840 until his death in 1849. The Dutch king felt a strong connection to the city Tilburg, which he often visited and where he build a palace. He was once quoted saying: "This is where I breathe freely, this is where I feel happy." The club was founded in 1896 and was first named Tilburgia. Two years later the founders changed the name to Willem II as a tribute to the king.

Willem II fans are called Kruikenzeikers (=jug pisser). This nickname has its roots during the industrial revolution, when the textile industry settled in Tilburg. During the process of making wool, the wool needed to be washed by urine. The inhabitants of Tilburg where asked to urinate in a jug, which was collected every morning by the wool factories.

Willem II's fanatic side is based next to the away block, behind the goal. It is called Kingside, referring to the king Willem II. This side contains fanatic supporters and hooligans. Another side is based on the other side behind the goal, but it contains more families and students.

NAC fans are called homo’s (=gay) and the town Breda is called Gayda. The origin of this nickname is not known. Besides this, Willem II fans also dislike the behaviour of the NAC fans, it's bragging.