RETURN OF THE KING! In this issue: Lion-O returns to the Cats' Lair to reclaim his leadership over the ThunderCats! Visibly older and wiser, the now-seasoned ruler carries himself with a new air of authority — something that puts him on a collision course with Apex's mysterious plans! Courtly scribes DECLAN SHALVEY and DREW MOSS fulfill their royal charter with ThunderCats #21 — enrobed in cover regalia from MOSS, SHALVEY, LUCIO PARRILLO, JAE LEE & JUNE CHUNG, and MANIX!