Katu
Katu is a Marvel mutant who first appeared in the landmark Uncanny X-Men #300, positioned at the crossroads of the X-Men and the Acolytes — Magneto's fanatical followers — bringing him into orbit with figures like Colossus, Nightcrawler, and Professor Xavier.
Debuting in the landmark Uncanny X-Men #300 in 1993 — a milestone issue brought to life by Scott Lobdell and John Romita Jr. — Katu is a Marvel mutant whose story unfolds at the intersection of two of the X-Men's most storied factions, carrying dual affiliations with both the X-Men and the Acolytes. That's a fascinating place to stand in the Marvel universe, and it means Katu's pages are populated by heavy hitters: Colossus, Nightcrawler, and Charles Xavier himself are among the figures sharing those adventures. Though appearances across Uncanny X-Men, X-Men, and the pivotal X-Men: Fatal Attractions saga are relatively select, a presence that has persisted from the Copper Age all the way through 2020 speaks to a character with genuine staying power in Marvel's mutant tapestry — a quiet fixture worth seeking out for dedicated X-fans who love discovering the layered, lived-in corners of the saga.

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Covers through the years — 1993–2016
1993
1999
2009
2012
2016