Celeste Cuckoo

* Angel - both residing at the X-Mansion (from X-Men #413, again from All-New X-Men #5-11)
* Anole - students together at the Xavier Institute (until All-New X-Men #11)
* Armor - they were both students at X-Mansion (until All-New X-Men #11)
* Beast - both residing at the X-Mansion (X-Men #413 - All-New X-Men #11)
* Blindfold - both students at the Xavier Institute (until All-New X-Men #11)
* Cable - they possibly meet at the wedding of Havok and Polaris (X-Men #425)
* Chamber - they are briefly both at the Xavier Institute (X-Men #422-423)
* Charles Xavier - residents of the mansion at the same time (from around X-Men #409)
* Colossus - residents at the X-Mansion at the same time (from Ast X-Men #3.6)
* Corsair - they possibly meet at the wedding of Havok and Polaris (X-Men #425)
* Cyclops - residents at the X-Mansion at the same time, later members of X-Men Extinction team (from All-New X-Men #11)
* Domino - they possibly meet at the wedding of Havok and Polaris (X-Men #425)
* Dust - residing at the X-Mansion at the same time (until All-New X-Men #11)
* Elixir - they were both students at X-Mansion (until All-New X-Men #11)
* Emma Frost - biological mother and guardian
* Forge - they possibly meet at the wedding of Havok and Polaris (X-Men #425)
* Galactus - a student namedrops Galactus in All-New X-Men #10
* Gambit - they possibly meet at the wedding of Havok and Polaris (X-Men #425)
* Genesis - residents at the X-Mansion at the same time (until All-New X-Men #11)
* Glob Herman - students together at the Xavier Institute (until All-New X-Men #11)
* Guardian - Cuckoos are presumably at the Xavier Institute when Alpha Flight show up to collect Sammy Paré (X-Men #422)
* Havok - they both reside in the Xavier Institute (from X-Men #420)
* Hellion - students together at the Xavier Institute (until All-New X-Men #11)
* Hepzibah - they possibly meet at the wedding of Havok and Polaris (X-Men #425)
* Husk - both residing at the X-Mansion (from around X-Men #410)
* Iceman - both residing at the X-Mansion (X-Men #413 - All-New X-Men #11)
* Jean Grey - residents at the X-Mansion at the same time (in New X-Men series)
* Jubilee - its possible they meet at the Xavier Institute (around X-Men #423-427)
* Juggernaut - both residing at the X-Mansion (from X-Men #413)
* Kid Omega - residents at the X-Mansion at the same time (until All-New X-Men #11)
* Magik - members of X-Men Extinction team (from All-New X-Men #11)
* Magma - its possible they meet at the Xavier Institute (around X-Men #423-424)
* Magneto - the Cuckoos hear of Magneto from Xavier (New X-Men #136), later members of X-Men Extinction team (from All-New X-Men #11)
* Mercury - students together at the Xavier Institute (until All-New X-Men #11)
* Mindee Cuckoo - sister clone
* Mirage - they possibly meet at the wedding of Havok and Polaris (X-Men #425)
* Multiple Man - they possibly meet at the wedding of Havok and Polaris (X-Men #425)
* Nightcrawler - both residing at the X-Mansion (from X-Men #413)
* Northstar - both residents of the X-Mansion (from X-Men #414)
* Oya - residents at the X-Mansion at the same time (until All-New X-Men #11)
* Phoebe Cuckoo - sister clone
* Pixie - students together at the Xavier Institute (until All-New X-Men #11)
* Polaris - both are residents at the X-Mansion (from X-Men #418)
* Puck - Cuckoos are presumably at the Xavier Institute when Alpha Flight show up to collect Sammy Paré (X-Men #422)
* Quicksilver - they possibly meet at the wedding of Havok and Polaris (X-Men #425)
* Rockslide - students together at the Xavier Institute (until All-New X-Men #11)
* Rogue - they possibly meet at the wedding of Havok and Polaris (X-Men #425)
* Sasquatch - Cuckoos are presumably at the Xavier Institute when Alpha Flight show up to collect Sammy Paré (X-Men #422)
* Scarlet Witch - they possibly meet at the wedding of Havok and Polaris (X-Men #425)
* Shadowcat - residents at the X-Mansion at the same time (Ast X-Men #3.1 - All-New X-Men #11)
* Skin - Cuckoos are residents at the Xavier Institute when Skin dies on the lawn (X-Men #423)
* Snowbird - Cuckoos are presumably at the Xavier Institute when Alpha Flight show up to collect Sammy Paré (X-Men #422)
* Storm - residents at the X-Mansion at the same time (until All-New X-Men #11)
* Vindicator - Cuckoos are presumably at the Xavier Institute when Alpha Flight show up to collect Sammy Paré (X-Men #422)
* Wolfsbane - they possibly meet at the wedding of Havok and Polaris (X-Men #425)
* Wolverine - both residing at the X-Mansion (X-Men #413 - All-New X-Men #11)