Loveable loser meaning console that wasn't well received commercially but you still adore to this today. From the Sega Master System (US!), to the Atari Jaguar and 3DO. The Dreamcast is generally considered one of the most beloved failed consoles. And recently, we've had the Wii U and Vita have a whole bunch of ardent fans.
I'm partial to the Neo Geo Pocket Color. Loved the microswitch joystick and chunky design. Hard to say if it was loser as it was kinda niche, but Nintendo was just dominant with the Gameboy line at the time. But I finally got to have access to a Neo Geo system. Hey, it wasn't an AES. But still in the Neo Geo family. I also loved the hard cases, a nice call back to the AES carts. I know they're not the best for the environment, but you were also less likely to chuck them unlike the GB's cardboard cases--something we all regret when we look at CIB prices today.
I'm partial to the Neo Geo Pocket Color. Loved the microswitch joystick and chunky design. Hard to say if it was loser as it was kinda niche, but Nintendo was just dominant with the Gameboy line at the time. But I finally got to have access to a Neo Geo system. Hey, it wasn't an AES. But still in the Neo Geo family. I also loved the hard cases, a nice call back to the AES carts. I know they're not the best for the environment, but you were also less likely to chuck them unlike the GB's cardboard cases--something we all regret when we look at CIB prices today.