Howard Stark: (Y/N) has the special relationship with his father. (Y/N) always love his father and wanted to follow his father's footstep use their company to change the world for the better. However his father got killed included his mother and younger sister's life when he was 11.

Maria Stark: (Y/N) has the good beloving relationship with his mother. (Y/N) love and care his mother until one day he found out his father and mother got killed took their life from the Huge attack.

Peggy Stark: Peggy was (Y/N)'s beloving younger sister, he love his younger sister and care for her. One day, he found out his parents got killed by Huge attack and his younger sister's body were never found, which cause him to creates weapons industries. 

Ho Yinsen: Ho Yinsen has save (Y/N)'s life from terrorist's attack and unable to remove the shards from his heart. They became close and (Y/N) thankful for changing his life and realize of his mistakes. And remembers of his last dying word to him, "Don't waste it. Don't waste your life." He repay for Yinsen to save his home village from 10 Rings.

John Rhodes: John is (Y/N)'s best friend during in their childhood. They often like brother and he know his identify as Iron Man and worried about on (Y/N) of his Arc Reactor spreading out of palladium toxic poison on his blood veins. 

Happy Hogan: He is head of security and (Y/N)'s close friend during in the middle school. He oftens to be get annoyed by (Y/N) womanizer. 

Penelope Potts: She is the assistance and classmate of (Y/N) Stark. But she have romantic feeling for him and jealous knowing (Y/N) love Riri. 

J.A.R.V.I.S: (Y/N) has the special and close bond with Jarvis, he name the A.I after from his family Butler Jarvis. 

Nick Fury: Nick Fury has the compilated relationship with (Y/N) Stark, he reveal to him that he is old friend of his father and the headmaster of Yurigaoka and known about of his behaviour of Palladium Arc reactor is killing and he is dying. 

Surrogate Daughter:

Yuri Hitotsuyanagi/Stark: Yuri was created when (Y/N) touch alongside with Yuri's Charms, causing her to be created. He started to treated and care for as his daughter and Yuri treated Riri and (Y/N) as the parents. He was happy and relief that she on humanity's allied side, however she was killed by Iron Breaker to taking of her core since she has special human and Huge genes. Causing (Y/N) goes depression and rage on Iron Breaker and Yuri gave of her leftover spare core to (Y/N) knowing it will save on (Y/N) to create new Arc Reactor with new Element to finish what his father has started.