The form Kaisar seems to be in several eastern languages. There's a British medal called the Kaisar-I-Hind Medal, which presumably means Emperor of India, but I can't say exactly what language. The -i- connective is the Dari (Afghan) version of the Persian -e-. I don't know whether it was borrowed into any Indian languages, such as Urdu. This construction is Persian, and is not native to true Indian languages.