Im that newbie parent who has no idea what they're doing, but the time has come to potty train the toddler, and one thing I do know is that 97% of this kids motivation to use the potty involves his desire to wear superhero underwear with all his favorite characters on it.  So I ordered his 2 absolute favorites- Avengers and Ninja Turtles. And Ive gotta tell you, he has worn his Ninja Turtles every day, and he has chosen to wear one pair of these once.  Hulk is his absolute favorite, so why? Because those Ninja Turtle underpants have awesome full color pictures of all 4 turtles on every single pair.  Meanwhile these have mostly stylized mono color renditions of the heroes logos.  I mean, put Captain America on there, not a plain blue pair of underpants with one picture of a shield!  Put Hulk smashing something, not a green logo with a fist!  And yeah, I saw the design before I ordered, so this should not have been a surprise what they looked like.  But at the end of the day, I can tell you that these are not as popular with my toddler as the other options out there.