Ainz Ooal Gown, previously known as Momonga, is Pandora's Actor's creator. Pandora's Actor's loyalty to his maker supersedes any loyalty given to the other Supreme Beings. Due to his familiarity with his creator, he does not shy away from expressing his own opinions and criticisms towards Ainz's plans and orders, unlike the other NPCs in Nazarick. Later on, Ainz begins to grow more attached to his creation and later acknowledges him as his own son and allows him to call him father, but this special treatment is meant to be kept a secret from the other Floor Guardians.
Ainz, in turn, has placed explicit trust in Pandora's Actor and frequently assigns him missions that primarily involves him acting as a body double for either Ainz in his Overlord form or in his Momon form.
Albedo had no prior interactions with Pandora's Actor until she visits the Treasury with Ainz. What is known is that she is extremely jealous of him as he is the only NPC whose creator remains in Nazarick. When he impersonates her creator, Tabula Smaragdina, she immediately wants to kill him for the impudent act.
However, despite her initial jealousy and anger for Pandora's Actor, Albedo now possesses a much better view of him due to having asked for him to be part of her secret unit and a possible ally in her scheme to make Ainz the sole ruler of Nazarick. This is likely due to him being completely and utterly loyal to his creator Ainz to the point that he will even battle the other 40 Supreme Beings for his sake alone, which makes him an ideal candidate in her future plans.
Having gotten over her initial hard feelings for him, Albedo now trusts and possesses a very cordial relationship with Pandora's Actor. This is seen during their assignment to assess the unknown threat who interferes with the Sorcerer Kingdom's war with the Re-Estize Kingdom. He is shown to have good coordination with Albedo in his Momonga form to completely fool their enemies during their planned ploy and they are later seen interacting respectfully with each other during their report back. Albedo has now more or less gotten accustomed to his eccentricities, but still considers him sometimes childish every now and then.
Demiurge says that he cannot help but envy Pandora's Actor, even if just a little, for the hard-work Ainz has done as his creator.
When Pandora's Actor meets Yuri Alpha for the first time, he calls her a young lady. Yuri shows displeasure at being called this because of her pride as a member of the Pleiades.
When Pandora's Actor meets CZ2128 Delta for the first time, he calls her a young lady. She shows no reaction, only holstering her weapon in her hand. When Pandora's Actor exaggeratedly salutes Ainz, CZ2128 lets out an “uwah,” a sound that deeply hurts Ainz.
Little is known about their relationship, but they currently work together since Pandora's Actor disguises himself as Momon since the creation of the Sorcerer Kingdom.