Once again, every character would be fine for different reasons.
The Runner is good because she can make small jumps and not fall into the gaps easily.
The Lizard goes slowly, and jumps high to a point where you can hit the wall perpendicular to you. Or just the left and rightmost walls. You could jump off the 'dead end' depicted in the screenshot and land.
The same goes for the Bunny, except it jumps even further, and you should zip through the level. (Make sure to try to hop as much as possible so you go much faster!)