"DuckdischNick" isn't verry funny and also doesn't relate to Sputnik vocally. It's one of those words that really stand out because they don't fit and sound forced.
I would like to suggest to rename it to "Spucknet".
It's vocally related to Sputnik and means "don't spit".
It also has "net" in it wich in this case could also be short for "Netz" and relates to telecommunications wich also relates to satelites.