Undeleateable mob

So I was making a custom living entity when the pc started lagging and I restarted the pc. When I went back to make the mob again and test it in the Dev world, the old mob (unfinished) and the new one were both in the game. When I tried to find the unfinished mob in the workspace, it just wasn't there. I tried going to localization, but nothing. This wouldn't really be an issue, but the problem is that the mob naturally spawns, and it's kinda OP and with the wrong texture for the model, so sometimes qhen I wander around I see this random glitched texture mob. If anyone knows how to delete it, please help!