When you are making OCs it shouldn't be in high number. Like make a bunch of stuff until one sticks. Instead, try making each OC with depth, story, background, past, characterism/personality, lore, connection with other ocs, motivation, tragedy, fortune , joy and emotian. That's why people with low number of ocs have the most interisting ones, and doesn't get boring. Examples can be seen on Mush, Sketchy and Ben