‣ Vishvakarma Deva - The craftsman deity, the divine architecture of the Gods, The Divine Engineer of the Universe; His abode is Vishvakarmaloka; He is the father of Sanjana and Chhaya; Father-in-law of Surya deva; Grandfather to all the kids of Surya deva. 

‣ Rishi Kashyap - A Maharishi; mind-born son of Brahman; husband of Aditi (most relevant); Member of Saptarishi; father of Adityas (including Surya & Indra); grandfather to his numerous grandchildren (too many to count).

‣ Devi Aditi - Goddess of Infinity, Unconsciousness, Fertility and Sky; The Celestial Mother; Mother of Adityas - considered a mother for all other Gods too; Grandmother to her several grandchildren.

‣ Samudra Deva - A minor deity of Oceans, under Varuna Dev; Father of Devi Lakshmi & Alakshmi; father-in-law of Mahavishnu; Grandfather of Luv & Kush (and any other prospective grandchildren)

P.S Does anyone wants cool uncles Adityas to appear ? Except Indra - he is already present! 

Upcoming chapter - Blunt Grandparents Galore!