[2] After Gerber's run on Marvel-Two-in-One, Wundarr mostly disappeared until the Project Pegasus saga (written by Mark Gruenwald and Ralph Macchio), in which he became "The Aquarian".

[1][6][7] On a distant planet called Dakkam,[8] scientist Hektu believes that his world will be destroyed when their sun goes nova.

[1] He and his wife Soja launch their young son Wundarr into space to save him before being killed by the Internal Security Force.

[7][3] In July 1951, Wundarr's ship enters Earth's gravity and is exposed to cosmic rays before crashing in a Florida swamp.

[7][9] With his great leaping ability, Wundarr eventually reaches Hydro-Base, where Namor and Namorita are trying to rehabilitate the population of Hydro-Men.

Two Dakkam officials, Tuumar and Zeneg, believe that Wundarr may seek to avenge his father and send a Mortoid robot to assassinate him.

[3][14] This overload of energy greatly boosts his abilities, both mental and physical, giving him his power "dampening" field.

[volume & issue needed] For a time, he leads the Water-Children, a philosophical cult dedicated to pacifism and awaiting the coming of the Celestial Messiah.

[20] After recovering, he defends Florida during the Skrull invasion of Earth,[21] and later attends Ben Grimm's bachelor party.