Growing up I loved watching the Superfriends, a more kid friendly Justice League. One duo that were members was the Wonder Twins. The twins were mutants born on planet Exxor. They were each gifted with a specific form of shape-shifting. Their powers were activated when they touch rings. This is part of why their powers are the worst, however, Zan gets the worst of it. Jayna can turn into any animal, whereas, Zan can turn into any form of water (solid, liquid and gas). This ability is limiting in that he can’t really do much. He often turns into a puddle of water and needs to be carried in a bucket.
They were often played for laughs at least during commercial breaks or after credits on the Cartoon Network. The need to for them to announce the form they intended to transformed into stating, “Shape of . . .”, “Form of . . .” seemed impractical, but also was part of the humor. In one episode Jayna turns into a seagull, while Zan turns into a “Ice Gondola (Chair of Ice).” I’m sure that they have gotta retconned in some way or have been given power upgrades, but I choose to remember them as they were on one of my favorite childhood television shows the Superfriends, useless.