Formal:
* ಬರುತ್ತಾರೆ (baruttaare) - This is the most formal way to say "will come" and is used when talking about someone in a position of authority or someone you don't know well.
* ಬರುತ್ತದೆ (baruttade) - This is the formal way to say "will come" for something that is not a person, like an event or a bus.
Informal:
* ಬರುತ್ತಾನೆ (baruttaane) - This is the informal way to say "will come" for a male person.
* ಬರುತ್ತಾಳೆ (baruttaale) - This is the informal way to say "will come" for a female person.
* ಬರುತ್ತೇವೆ (baruttaave) - This is the informal way to say "will come" for a group of people, including yourself.
You can also use the future tense of the verb "ಬರು" (baru) to say "will come":
* ಬರುವನು (baruvanu) - He will come (formal)
* ಬರುವಳು (baruvalu) - She will come (formal)
* ಬರುವುದು (barudu) - It will come (formal)
The specific word you use will depend on the context and the formality of the situation.