Marvel's latest teaser for Tini Howard and Marcus To's Excalibur could spell trouble for the eponymous team.

The image features Apocalypse looking on at his fellow mutants, along with the ominous message: "Some mutants are never satisfied..."

RELATED: EXCLUSIVE: Excalibur #1 Variants Unite the New Captain Britain's Team

While Apocalypse was announced as a member of the Excalibur team at Comic-Con International in San Diego, this teaser could indicate he hasn't turned over a new leaf after all.

Here is the solicitation information for Excalibur #1:

EXCALIBUR #1

  • TINI HOWARD (W) MARCUS TO (A) Cover by MAHMUD ASRAR
  • EVERY MUTANT EVER VARIANT COVER BY MARK BAGLEY
  • YOUNG GUNS VARIANT COVER BY MIKE DEL MUNDO
  • DESIGN VARIANT COVER BY JONATHAN HICKMAN
  • VARIANT COVER BY MIKE MCKONE
  • VARIANT COVER BY KRIS ANKA
  • HIDDEN GEM VARIANT COVER BY TBA
  • A NEW DAWN IS FORGED!
  • The Otherworld is rocked by war! It is a new era for mutantkind as a new Captain Britain holds the amulet, fighting for the Kingdom of Avalon with her Excalibur at her side - Rogue, Gambit, Rictor, Jubilee...and Apocalypse.
  • 40 PGS./Rated T+ …$4.99

RELATED: Excalibur #2 Cover, Solicit Teases An Multiversal X-Men Storyline

Excalibur #1, by Tini Howard and Marcus To, goes on sale Oct. 30 from Marvel Comics.