Supergirl - 'Childish Things'

Now revealed, MM is of course contractually obliged to start sucking for
convenience.

Kara and Alex are trying to persuade Hank/J'onn to be more of a superbadass, but he is resisting, since he feels that there is a strong risk of his losing his connection with humanity if he embraces the personality of the Martian Manhunter too closely. Eventually, he is talked into using his shapeshifting powers to access Lord Industries and discovers the lab with the comatose woman, but runs afoul of a suspicious guard and has to wipe his mind (since he forgets that he can just lift any relevant security responses and information from the guard's brain, because much like Superman, the Martian Manhunter is obligated to make poor use of his powers in order to keep everyone else relevant.)

"Where did I go wrong as a father?"
"Hmm... let me think."

Meanwhile, Wynn's father breaks out of prison, but he's not just a run of the mill felon; he's Toyman, a supervillain with an axe to grind against his former employer and a bit of a theme going (hint: it's not cake-based.) Kara comforts Wynn, who tries to kiss her, so drama there. Toyman kidnaps Wynn and tries to force him to assassinate his enemy, so that they can go to prison together, but Wynn refuses the shot and Kara contains the blast of the bombs intended to force Wynn to obey.

We close with Max Lord creepily watching Kara and Alex watching Game of Thrones via a webcam, because apparently we weren't clear enough that he's a creep. For non-comic readers, it's probably worth noting that this is someone whose confession, enforced by the Lariat of Truth, was so appalling that Wonder Woman casually snapped his neck after hearing it. He really is the creep of all creeps, but there's a special creepiness in hacking your not-girlfriend's webcam whether or not you suspect her sister of being an alien.

'Childish Things' suffers from the presence of love triangleness (on the other side, Lucy Lane gets a job as legal counsel for KatCo,) and enforced Martian failure, and serves otherwise to nudge the Max Lord 'not remotely the same concepts as Superman vs. Batman' plot forward. It's mostly fun, but not great, and struggles to get enough pathos into Wynn's storyline given that his dad has only really been mentioned in passing previously.