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Invincible, along with Firebreather and other new Image superhero characters, debuted in an issue of The Savage Dragon, and has since appeared with several of the characters in The Pact mini-series.

Robert Kirkman wrote a miniseries, Savage Dragon: God War and two Superpatriot mini-series, establishing the friendship between Superpatriot's wife Claire and Invincible's mother in the pages of Invincible # 13 and later.

The Savage Dragon connection is mostly downplayed and Invincible follows its own continuity, tied mainly with previously mentioned satellite Kirkman characters.

Invincible also appeared in the fourth issue of Jay Faerber's Noble Causes, and was seen at the funeral for Captain Dynamo, father of the characters in Faerber's Dynamo 5.

Similarly, Invincible # 48 features cameo appearances from several Savage Dragon characters, as well as both Dynamo 5, and many of Kirkman's own creations, while an earlier issue featured a funeral for the Guardians of the Globe, at which many Image characters, including Savage Dragon and Jack Staff, were in attendance.