When Dr Sinister hatches his latest plan to take over the world, and creates evil custard that turns children into deadly blob monsters, what better place to try it out than an unsuspecting school? Little does Dr Sinister realise that Mighty High is a school for superheroes - they are all acting ordinary to pass the school inspection!

• Clawr
• Hawlfraint
• Melltith y Cwstard Cas
• Newyddion drwg
• Pwerau Arbennig
• Croeso oeraidd
• Gwyddoniaeth gwallgo
• Llond llwy o gasineb
• Rhagor o fwyd
• Helbul melyn
• Dihiryn peryglus
• Gwâl ddieflig
• Cawlach go iawn
• Swigod hynod
• Adroddiad yr ysgol