The cute animal in our fanart Big Challenges The Green Alligator cursor pack isn't as popular as the world-famous Hello Kitty or My Melody, but his time will come one day. Big Challenges is an alligator character from Sanrio that looks like a simple cartoon crocodile with two black dots for eyes and a very long mouth. Sanrio's official description says he is a unique crocodile with a playful face that looks like he is smiling. Enjoy your time with this green pal.