MARKUS "MARK" SEBASTIAN GRAYSON
Alias: Mark, Invincible
1st Appearance: Noble Causes: Family Secrets # 3
Teams: The current version of the Pact

Powers: Super Speed, Super Strength, Flight

Intro: See Who Is Invincible?

Essential Stories:
As it turns out, the whole archive. That must be shocking since the comic is named after him...

DEBBIE GRAYSON
Relation: Mark's Mother, Nolan's Wife
Alias: None, unless Nolan had any pet names
1st Appearance: Invincible # 1
Teams: The Grayson Family

Powers: She cooks a good dinner and has the ability to make Mark wash dishes.

Intro: Debbie Grayson deals so often with the extraordinary that it's simply become the usual. She is a content stay at home mom who yells at her husband and son for flying in the house and thinks nothing of her husband fighting 60 story tall dragons. Debbie is a strong character who is content with her life.

Spoiler: Once Nolan reveals he is really on earth to take over the planet and that he supposedly doesn't love his wife, Debbie became deeply depressed and began constantly drinking. In an attempt to regain some control she decided to try selling real estate. Even this didn't completely take up her time but with the addition of Oliver it seems Debbie feels she has purpose again.
Essential Stories: # 1, 13, 24, 30 - 31

NOLAN GRAYSON
Relation: Mark's Father, Debbie's Husband
Alias: Omni-Man, Nowl-Ahn
1st Appearance: Invincible # 1
Teams: None, but worked closely with the old Guardians of the Globe

Powers: Super Speed, Super Strength, Pretty much invincible, and Flight. All more advanced then Marks

Intro: Nolan comes from Viltrum. Nolan described Viltrum as a utopia. They had created a commit who's purpose was to find planets to improve. In his travels with this commit, Nolan found earth and decided to be it's sole defender. He is considered by many to be the greatest hero in the world. Nolan made a living as an author. He started by writing science fiction which never sold well and moved on to travel books. Mark has a lot to live up too. Spoiler: Nolan lied about Viltrum to everyone. They are militaristic and bent on universal domination. Nolan was positioned on earth to prep it for a take over. Upon finding this out Mark and Nolan fought. Nolan left Mark nearly dead and flew off the planet being unable to kill Mark. Nolan found another planet and peacefully took it over in hopes of gaining favor with his Viltrumite leaders. Nolan knew they would find him and be angry with him for abandoning his post. Nolan had the aliens of his new home contact Mark and ask him for help. Mark agreed and upon arriving was reunited with his father. Three viltrumites came to this new world where Nolan and Mark fought them. They both survived but Nolan's back was broken in the process. He was taken away for judgement but a viltrumite clean up crew and Mark was charged with prepping Earth for take over by 100 years from then. Mark has no intention of helping. Nolan before being taken away told Mark to read his books. Mark seems to feel that his father put in them how to defeat the Viltrumite empire. Nolan hasn't been seen since.

Essential Stories: # 2, 7, 10 - 12, 25 - 29, 35

OLIVER
Relation: Nolan's 2nd Son, Andress's Son
Alias: Mark's Little Brother, The Blue Kid
1st Appearance: Invincible # 26
Teams: None

Powers: Nothing yet but we have high hopes

Spoiler: Oliver is the child of Nolan and Andressa. Nolan had him on the alien planet that he ran to after leaving earth. Oliver's aging is faster because of the insect DNA in him but Nolan seems to think that as he gets older and his viltrumite DNA begins kicking in his aging will slow down and his powers will develop.

Essential Stories: # 26 - 29, 30, 35

ANDRESSA
Relation: Nolan's 2nd Wife, Mark's Step-Mom
Alias: None presently
1st Appearance: Invincible # 26
Teams: None

Powers: The power to age really fast.

Intro: Andressa is part of an alien race that requested Mark's help against an invasion. Andressa's race only has a life span of about 9 months and learns almost instictively.

Spoiler: (See Nolan's Spoiler section above) Andressa is Mark's stepmom being married to Nolan. Her and Nolan gave birth to Oliver. Upon Nolan's been taken by the viltrumites, Mark helped Andressa's people rebuild until finally she told Mark to leave and take Oliver with him. They both reminded her to much of Nolan and also she knew Oliver would have a more normal life with Mark.

Essential Stories: # 26 - 29, 30