Геппі

Happy is a machine cat from the planet Excede, Rebecca Bluegarden's companion, and a member of the Edens Zero's crew. His ability "Happy Blasters" allows him to transform into a pair of guns that fire Ether bullets. These bullets are powerful enough to incapacitate their targets, but won't kill them.

Happy was a cat found by Rebecca when he was young. He instantly became friends with her due to them sharing common life events. He received his name "Happy" from Rebecca for making her happy by becoming her friend. Sometime later, an accident occurred where a drunk driver ran over Happy, which ended up killing him. Thanks to Professor Weisz, he was revived into a machine body and continued his friendship with Rebecca.