Happy, a feline companion from Excede, began as an ordinary cat bonding deeply with Rebecca Bluegarden during their orphaned childhood on Blue Garden. Named for the joy he brought, his life shifted when a drunk driver’s accident claimed his life. Revived as a full-body android by Professor Weisz Steiner via consciousness transfer, he initially struggled with self-doubt until Rebecca’s unwavering acceptance anchored his new mechanical existence. Sporting a compact blue feline form with a white underbelly, black-tipped tail, and pink ears, Happy’s design features a distinctive rectangular head, slender eyebrows, and light blue cheek markings. He walks upright, devoid of biological needs, though Universe 0 preserves his organic state without mechanization. His personality marries playful antics with a grounded, serious side. Sharing Rebecca’s introverted hobbies like gaming, he occasionally indulges in mischievous humor, playfully nudging her to enhance their B-Cube channel’s content. Loyalty and empathy drive him, reacting fiercely to friends’ distress. He harbors disdain for canines, tolerates mechanical dogs, and laces speech with characteristic "Aye" affirmations. As an android, Happy morphs into weaponized configurations. His signature Happy Blasters reshape his frame into twin firearms discharging non-lethal Ether projectiles. Modes include Assault Rifle for range, Solo Mode for autonomous cannons, and a tail-mounted blade for slicing barriers. Overexertion drains his Ether, requiring recharge intervals. Adventures see him co-manage the B-Cube’s Aoneko Channel via a heart-shaped terminal, documenting exploits. Joining the Edens Zero crew, he aids Valkyrie’s Army against Sun Jewel’s Punishers and faces temporary deactivation in Belial Gore before emerging in another timeline. Universe 0 retains his organic form, stripping mechanized powers but preserving his essence. Alternate realities depict versions severed from Rebecca, sold to a junk dealer, or obliterated in antimatter blasts, underscoring the story’s multiverse structure. His core narrative prioritizes his bond with Rebecca and mechanical adaptation. Diverging from his Fairy Tail counterpart, he lacks wings, swaps a satchel for a B-Cube accessory, and sports a uniquely colored tail. Initially a placeholder due to E.M. Pino’s delayed debut, he evolved into a narrative cornerstone.