One thing Borussia Dortmund fans love almost as much Pierre-Emerick Aubameyang regularly putting the ball in the back of the net is his famous Batman celebration.The Gabon international and his BVB teammate Marco Reus are well known for their Batman and Robin cameo following the France-born striker's goals.It has become Aubameyang's trademark at the Westfalenstadion in recent years - where he has become one of the most prolific goalscorers in Europe - since taking Robert Lewandowski's place at the spearhead of Dortmund's attack, after he left for rivals Bayern Munich in 2014.

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Many footballers across the world have their own iconic goal celebrations, but few are as memorable and identifiable with fans than Aubameyang's masked celebration.

In fact, the 27-year-old appears to love superhero characters, as he's also donned Spiderman masks in the past, also.

But despite the Gabon striker's celebrations having never caused problems previously, Aubameyang was fined by Dortmund and spoken to by the club after scoring against Schalke on Saturday.

Dortmund's top scorer netted the opening goal at the Veltins-Arena to give the visitors the advantage, and duly celebrated with his iconic mask celebration.

However, it was soon picked up on that it was not his usual mask, but identified as the one used by Nike - Aubameyang's sponsor - in their current 'The Masked Finisher' campaign.

BVB take action with Aubameyang

BVB were then forced to take action, given their ties with rival sports brand Puma who are a shareholder and supply their kits, after the striker had, for a second time in a month, promoted Nike while playing for Dortmund.

"He wasn't aware of the consequences of his actions," said Dortmund sporting director Michael Zorc said, per ESPN. "[But] we couldn't tolerate it."

Aubameyang is not known for being a controversial character, and his presence on social media appears to show him as a more jovial and lighthearted individual.

Gundogan voices his support

It's certainly been an odd few days for the striker, but one friend and former Dortmund teammate Ilkay Gundogan gave his backing to the Gabonese striker over the incident, who he played with for three years at the Bundesliga club.

"Can't understand the debate about Aubameyang. Genuinely a polite, nice and humble guy. Stay the way you are my friend. And keep scoring." the Manchester City midfielder tweeted.

The latest incident suggests Dortmund will not accept anymore messing around from Aubameyang if it is to impact their commercial interests. But so long as their 25-goal striker continues to net with regularity in the Bundesliga, he'll undoubtedly soon be forgiven.