Aadi Alahan is the son of Dev and Sunita Alahan. He was born on 13th January 2006, just before his twin sister Asha. In March 2006, Sunita still hadn't got back together with his father, and decided to leave the Street with the twins.
In late 2009, the twins returned when Sunita resumed her relationship with Dev. They moved into his Dev's flat in March 2010, after his mother and father reconciled. Aadi and Asha thought it was funny if Aadi went out onto the balcony of 7 Victoria Court, however, when Sunita tried to get him in she couldn't and Dev broke the handle when he tried to open the closed balcony door. After many attempts they failed, though Graeme Proctor was riding by and came to the rescue just as Sunita was going to call 999.