On-loan to the end of this season, Batshuayi scored twice on his BVB debut last night in their 3-2 win over FC Koln.
At the final whistle, the striker said: "I love Borussia Dortmund. Black and yellow are my favourite colors, because I love Batman and SpongeBob!
"My goal at Dortmund is to continue to win the victories so that we can finish as high as possible and play in the Champions League next season.
"I've tried to focus on the game today for the past two days," he added. "It was good, but I always want to do better, I could have scored even more today."