- Titan Physiology: As a Titan, A'Lars possessed much of same physical constitution and abilities from his extinct species.
- Thanos † - Son
- Black Order
- Gamora - Adoptive Granddaughter
- Nebula - Adoptive Granddaughter
- In the comics, A'Lars was a scientist and leader of the Eternal settlement on Saturn's real-life moon of Titan, and often went by the title of Mentor.
- In the official subtitles of Avengers: Infinity War, A'Lars' name was spelled as "Alars."
- In the non-canonical book Thanos: Titan Consumed, A'Lars is mentioned to be the High Mentor of Titan, the architect of the Eternal City.
Behind the Scenes
- Concept art sketched by Ryan Lang featuring a young Thanos and his Eternals family, drawn either for Avengers: Infinity War or Avengers: Endgame, seem to indicate that a flashback of Thanos' youth was supposedly considered to appear in one of these two movies, indicating that A'Lars was intended to make an appearance as well.
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