|This article is about TV Series character. You may be looking for his father, or any of his other appearances.|
Rick Grimes Jr., nicknamed R.J., is a survivor of the outbreak in AMC's The Walking Dead. He is the son of Rick Grimes and Michonne, the half-brother of the late Carl Grimes and Andre Anthony, and the adoptive brother of Judith Grimes. He resides at the Alexandria Safe-Zone with his mother and sister.
R.J. was conceived shortly before the disappearance of his father and was born 9 months later.
Six years after the disappearance of his father, a 5-year-old R.J. is now living with Michonne and Judith in their home in Alexandria.
As Magna sneaks around outside of their house with another knife, she opens a back door slightly but sees Michonne pick up and hug R.J., which prompts her to leave.
Later, after Michonne and Judith's conversation, R.J. runs up to Michonne and asks for food, as she picks him up and hugs him once again.
In Alexandria, R.J. sleeps in his bed as Michonne watches from his bedroom door.
In Alexandria, R.J. plays with Judith and Gracie on the community streets when Michonne comes out of her house and orders Judith to keep her brother safe as she goes over to the guard post.
At night, R.J. has dinner with his family and watches as his sister leaves.
In Alexandria, R.J. takes shelter from the storm with the residents in the church. Later, Judith pulls a blanket over herself and her brother to keep them warm, before Gabriel decides they're moving to Aaron's house. They all tie a rope around themselves and head out into the blizzard.
The next day, after the storm is over, R.J. crawls by the snow when Michonne and the others return to Alexandria. He then plays with the group in a snowball fight.
R.J. is brought alongside some children to see the beach for the first at Oceanside while the militia trains. Later on, R.J. and Judith play with some shells that R.J. found. As they dump out their seashells in the sand, a Whisperer mask falls out. Judith gets scared and informs the rest of the group.
A while later, Judith tells R.J. the story about Rick blowing the bridge to save his friends. "He died and went to heaven," Judith tells R.J. about "the brave man" in her story. Michonne walks up to hug them, telling them she'd do anything to protect them. Suddenly, an explosion rings out and everyone looks up to witness streaks of fire cascading from the sky. R.J. then stays at the camp alongside his sister.
While the Alexandria residents face against waves of walkers pouring onto the community gates over the next 49 hours, R.J. sleeps at his home and is looked after by his sister.
The next day, Judith keeps looking after her brother when Michonne arrives to rest with them. As they lay together in bed, R.J. cuddles next to his mother and sister.
R.J. and his family dine together and share a laugh as they are joined by Daryl. The following morning, R.J. is left under the care of Daryl as Michonne and Judith head out to Hilltop and later on to Oceanside.
R.J. attends the funeral service for Siddiq and listens to Gabriel's religious remarks. He is then carried away by Daryl.
Michonne and R.J. appear to have a loving mother and son relationship. He is first seen running up to her and she picks him up. Their interaction is very loving.
Judith and R.J. have a loving brother and sister relationship as they live together with Michonne. Judith is seen teaching R.J. how to ride a bike.
Rick is R.J.'s father. He doesn't know of his younger son's existence as he disappeared before he could find out that Michonne was pregnant. It is currently unknown how R.J. feels about his father or what he's been told about him. R.J. is named after Rick.
Gracie and R.J. are friends. She can be seen teaching R.J. how to ride a bike with his sister, Judith.
Daryl cares a lot about R.J., even before he was born, because of his relationship with R.J.'s father. Daryl mentioned to Judith that keeping her and R.J. safe is the most important thing for Michonne to do.
- R.J. is the sixth known child in the TV Series to be born into the apocalypse, the first being his sister Judith Grimes, the second and third being two unnamed infants living at the Kingdom, the fourth being Gracie, and the fifth being Hershel Rhee, the seventh being Jerry and Nabila's son, the eighth being their daughter, and the ninth being their other daughter.
- R.J. is the only member of the Grimes Family who did not have his own Comic Series counterpart.
- R.J. is Rick's only known living blood relative in the series. From his older half-brother Carl's death in "Honor" until his revealed birth in "Who Are You Now?", Rick had no known living blood relatives.
- R.J. and Judith are the first adoptive siblings to appear on the show.