This is Alvie's story. If you don't know who he is, he is Annabeth and Percy's third son.
Alvie was… different. When Tobias and Max were little, they made noises or cried when they wanted attention. Alvie didn't. He only cried when he had been ignored for too long, but it wasn't like he was being ignored intentionally. He was such a quiet baby and whenever someone held him, he wouldn't cuddle up to the holder, but remain stiff and unresponsive.
Annabeth's worry was growing. Percy noticed, having his own concerns for Alvie.
"Talk to me, Wise-girl." He said, massaging her shoulders.
"Are we doing something wrong?" She asked quietly.
"No." Annabeth turned and looked at him, tears in her eyes. Percy hugged her. "We'll keep an eye on him, OK?" She nodded, burying her face in his chest. Percy shifted his arms around her, holding her securely and rubbing her back reassuringly.
"Daddy, there's someone at the door." Tobias looked at his parents curiously. "Is Mammy OK?"
"She's tired, Tobias." Tobias toddled forward and hugged Annabeth's leg.
"Mammy get sleep." He insisted. "Daddy get door."
Percy answered the door, only to have a blue thing thrown in his face. He caught it and saw it was a toy, sky blue rabbit with long limbs and ears.
"Took ya time, bro." Percy glanced up.
"Hey sis. Alright, Leo?"
"Hey." Leo grinned. Elsie waved at Percy from where she was balanced on her father's hip.
"Percay." She said, looking at Leo. "Go Percay." Louisa barged past her brother and eagerly greeted her nephews. Percy took Elsie from Leo and waved his step-brother in.
"How's the new midget workin' for ya?" Louisa smiled.
"Well… he's different, to put it gently." Both Louisa and Leo looked concerned. Percy explained about Alvie's silent and unresponsive behaviour.
"Maybe he finds you smelly."
"Thanks for that, Leo." Leo grinned cheekily.
"Anytime."