In order of age: Tuxie 18 years, Cosmo 14 years (15 on June 4th), Nova 6 years, Apollo 5 years, Comet 7 months
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From @novaatebatman
In order of age: Tuxie 18 years, Cosmo 14 years (15 on June 4th), Nova 6 years, Apollo 5 years, Comet 7 months