Obviously Apollo and Artemis

.. like another Legacy I once saw...
I was going to go with those two in the case of a mixed-pair!
Nehru Legacy 2.3:
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Will the arrival of twins give Kaiser a run for his money?
....considering this little guy is named
Romulus and he has a little kid brother named
Remus, I'd say so!
Chris, you don't look so good.
Weren't ready for a pair of twins just a stone's throw from old age, eh?
Hiero, you may want to offer a comforting word or a pat on the back to your wife. (And Kaiser seems to be ENERGETICALLY protesting the new crib.)
...woman, you have two perfectly REAL babies in the nursury! Go play with them.
..only you can't, because Hiero and Tatiana are hogging them.
You wanted hands on work, Hiero? How's this?
Kaiser comes of age! He's a Family/Knowledge sim.
...and Hiero surprises me by going into old age. I hadn't been paying attention to him since the births of Tatiana and Kaiser.
Boy, did
this surprise me. The game developed an odd glitch where everyone wanted to pick Remus up, but no one could. I'd cancel the action, but Chris just stood in front of the crib, not responding to any of my orders. I tried moving the crib and baby around with move_objects on to see if that fixed the problem, but it didn't. I deleted Chris, but that didn't work, so I deleted Remus and reloaded the game. That fixed the problem, but when I reentered the house, Chris was sporting her pregnancy belly again. She wasn't actually pregnant (
thankfully), but Hiero could still "Talk to Belly" and "Rub Belly". She could "Try for Baby" in bed, and yet the carpool didn't come -- just like if she were pregnant.
I'm going to say she went crazy, wasn't ready to give birth, and was pretending the twins were still inside her stomach. She's now wearing one of those fake pregnancy bellies to convince herself.
One of the rules, or at least common practices, in a Legacy challenge is to have a portrait of the Founder and each of his Heirs. Tatiana and Kaiser are competing to see who can paint the best portrait: Tatiana's is the clear winner.
Uh oh, he's mobile.
Remus is actually a day younger than Romulus now, owing to my having to 'delete' him. (I used move_objects on to 'delete' him when trying to fix that crib hang-up. They're never actually deleted. That has to be done by household, or by editing the files manually, and it is not recommended as it messes up the entire neighborhood's memories and such.)
Poor, deluded Chris. Tatiana and Kaiser both take an active hand in raising their rivals to the throne, largely because Chris is typically sleeping, starving, or complaining, and Hiero is off pouring concrete.
Romulus, meanwhile, has grown quickly into childhood and is priming his mind for strategy.
While Romulus and Remus mature, though, Tatiana is off to college -- update soon to follow. (This would've been a 30-pic post, but I'm breaking it down into halves.)