Klypso the Hyperdog
From superman.nu: Supermanica
Klypso the Hyperdog
The super-powered, cape-wearing pet dog of Hyperboy of the Hyper-Family, who protects the distant planet Trombus. Klypso, like the other members of the Hyper-Family, only possesses superhuman powers under a red sun and is powerless under a yellow sun, the exact reverse of Krypto the Superdog (SB No. 144, Jan 1968: "Superboy's Lost Identity!").