I really am not fond of this name. The "K" seems random and out of place. Also, it would be misspelled often- but where I live there are two people in my grade with this name. If it was based off heritage I'd like it better, but it's a variant in Greek too. I understand why people use it though- Nicholas is even more popular. It's fine to name your child this, but I personally dislike it. Then again, one of the Nikolases I know feuded with me in orchestra.
I love this Greek form of the name Nicholas, it just looks so much more sharp to me, I love it. I was inspired by a certain Nikolas Cassadine of General Hospital ;]
https://www.euskaltzaindia.eus/index.php?option=com_ecoeoda&task=izenaIkusi&Itemid=&lang=es&kodea=1812&mota=izenak
https://www.ine.es/widgets/nombApell/index.shtml?L=1
Also Czech: https://www.behindthename.com/name/nikolas/top/czech
Also German: https://forebears.io/x/forenames/nikolas