Real Name: Sven, Harlan, and Eric Kleinstock
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The Kleinstocks are triplet mutants with the ability to merge into one another. Sven and Harlan are also able to project energy blasts, and Eric has the ability of flight.
The Kleinstocks were among the ranks of the second incarnation of Acolytes. During their first mission, the trio battled the X-Men while searching for a child who's mutant powers had not yet manifested. Eric Kleinstock was killed in the battle, but Sven and Harlan continued to work together with the Acolytes.
When they merge, Harlan's torso is in front, while Sven is in the back.
First Appearance: Uncanny X-Men (1963) #298
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View a chronological listing of this character's appearances
All-New Official Handbook of the Marvel Universe A to Z (2006)
#1 Cable (1993)
- 'Abraxas to Batwing'
#10 Heroes for Hire (1997)
- 'The Killing Field, Part 2: Like Lambs to the Slaughter'#11
- 'The Killing Field, Part 3: Divide and Conquer'
#8 Magneto (1996)
- 'Revelations (Book One)'#16
- 'The Siege of Wundagore, Part 3: Crisis!'
#1 Magneto: Dark Seduction (2000)
- 'Return of the Messiah'#2
#1 Marvel Encyclopedia (2002)
- 'The Masada Maneuver'#2
- 'Rotten Apples'
#1 Uncanny X-Men (1963)
- 'The Beast in Me'#11
- 'The Siege of Wundagore, Part 2: Anon No More!'#12
- 'The Siege of Wundagore, Part 4: Heir of Magneto'
#298 X-Factor (1986)
- '...For the Children!'#300
- '...For What I Have Done'#315
#92 X-Men (1991)
- 'The Man Who Wasn't There'
#25 X-Men: Magneto War (1999)
- 'Dreams Fade'#42
- 'Heaven Can Wait'#43
- 'Falling From Grace'#44
- 'Lost and Found'
X-Men: Mutant Empire (1996)
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