Who was Vishnuvardhan's Kuchikoo?

Late Sandalwood actor Vishnuvardhan is said to have called actor Ambareesh by the name of Kuchikoo. This was revealed by Sumalatha Ambareesh recently when Ambareesh received the Dr Vishnuvardhan Prashashthi Award.
"Ambareesh receiving the Dr.Vishnuvardhan Prashashthi Award from I &B minister Roshan Baig in Smt.Bharati's presence," tweeted Sumalatha adding, "He got this award 2 years ago..but he couldnt go for the ceremony held this year at dharwad..so it was given to him at home ! A great honor."
Sumalatha went on to say, "Vishnu must be smiling and blessing his dearest kuchikoo..we miss him so much..today and everyday."