The serie Mario & Sonic Worlds in Danger is one more serie that Mario and Sonic work together to stop Eggmam and Bowser and stop that the 2 worlds colide. Sonic too contain with Shadow, Tails, Knuckles, Tails, Blaze, Silver and others help to find the Chaos Emeralds and Crystal Stars before Bowser and Eggmam. But the work will be hard. The 2 semi-bosses is Turbo Mecha Sonic (Super Mario Bros. Z) and Capitain Basilisx (Super Mario Bros. Z). Have 22 episodes in this serie, the last episode is then Sonic and Mario transform in Hyper!