While playing as Bing Bong (and you've made sure you've updated Disney Crossy Road to the latest version), hop along until you see a weird grey and red door.

Play as Mufasa from the Lion King set and get trampled by a herd of wildebeest to unlock this mean ol' lion. Just get struck by lighting twice during a run and you'll grab this lion for your roster. You'll need to play as a Jungle Book character to get Adult Nala. If you manage this you'll unlock the character. What this means is you should stand behind the rock when the stampeding animals come through, then quickly switch to the other side of the rock for when they come from the other direction. To get Mufasa you need to play as Simba and spend 12 seconds near stampedes. This hidden character can be unlocked by playing as Hookhand in the Tangled theme, and playing the piano (the brown instrument that shows up on the track) 10 times. Do this 25 times, across multiple runs, to grab Ezra Beane. Play as Phineas Plump and get an armour to chase you - then hop away to stay alive.

Secret space characters crossy road