Just incorporating snake traits of things I like. Lean, vipery flare as they are the best for design elements, and blue racers for coloring (my absolute favorite, look them up if you dont know of them. gorgeous and cute masks), and the hood as it helped consistancy and snakes love going for flares. Funny enough that idea struck me more from the old design notes from xcoms snake concepts.
People have been saying this stuff a lot in most snakey creature designs but Tobi is nothing more than a viper and a squirrel, a well done one, but none of it is unique to tobi (other than flying squirrel snake, that sure is the qualifier) just a horned viper in all of the snake parts, its a common design trope to go for a lean snakey quadruped when going for limbed serpent vibes. Not the first and not the last. And I am thankful for more modern designs returning to it as it has been neglected a lot in recent years till that revitalized it. So I can see why people keep thinking this but there is a many of these through the years and have been a massive inspiration for me since I was little
Just incorporating snake traits of things I like. Lean, vipery flare as they are the best for design