Little Bee stared awkwardly at the red and blue mech with one eye partially squinting and his mouth opened in a slight frown. He didn't know what to make of this new youngling who he could tell was a bit older than him and his friends. Once again he peered toward his caretaker, Megatron, for a hint on what to do but all the larger mech did was simply smile. No help whatsoever!
The youngling across from him drew closer out of curiosity but respected the baby's personal space so still stayed a good foot away from the smaller sparkling. This still caused the younger of the two to lean on one of his arms away from the other as if to prepare to run away if deemed necessary. If Bumblebee had ears, they would point back right now.
Cautiously, the baby sniffed the scent of the intruding youngling and realized something. This sparkling had his caretakers' scents but was altered from both of them ever so slightly. This must be their sparkling! Why he hadn't seen the little mech before was puzzling unless…the other was old enough to be in a daycare or out and about whereas he and his friends couldn't be left alone yet. They were too young and his caretakers agreed to take care of them until their parents returned. It made sense considering this youngling knew he needed to be in the care of another while the other didn't.
Bumblebee perked up when he heard Megatron say a word he didn't recognize. "Op-tee-mus"? Was that a code for the youngling or what? Then the youngling responded in what he assumed was a conversation. He could only coo now but this mech was blabbing in actual words like it was nothing! To be fair, the most conversing he himself ever managed to create was technically with Wasp as they had an unusual half-sibling bond.
The youngling that Megatron kept calling "Op-tee-mus" turned back towards Bee with a smile; the latter tipping his helm to the side in wonder before he was presented with a toy. The toy seemed to be a stuffed cyber-cat, surprisingly fluffy and cartoonish. At first, the baby hesitated to take it but after noticing how the older youngling was kindly offering it to him with the same warm expression he often received from his caretakers, he obliged to take the gift. Bumblebee petted it for a few seconds before hugging it closely to him, making optic contact with "Op-tee-mus" almost as if to thank the other bot.
Optimus chuckled back but took out another stuffed toy that looked like one of those large, beastly "Dinobots", specifically the three-horned one. Bee razed an optic ridge prior to realizing the mech was trying to play with him and in return, he made his cyber-cat pounce onto the Dinobot. The older youngling produced what sounded like mimicked roars though less convincing, not that it was too concerning to the sparkling who peered up briefly at his caretaker, Megatron, to see what the latter was thinking.
Megatron smirked sweetly at the sight of the two finally playing with one another. He could tell that they would be great friends and hopefully even brothers when they both grew older. Of course, there was still the issue of what Bumblebee's carrier, Gold Star, would want to do once she returned from her off-world duties. It saddened the warlord when he reminded himself that the baby wouldn't be around forever. Whether they would meet again in the future or if Bumblebee would even remember him or Ultra or even Optimus was truly undetermined. But for now, it was best to think about the time they have with the sparkling in the present. For now, it was best to let them play.
AN: Here's Optimus! To be honest, I had no fucking idea how to introduce him. This was the best I could come up with.