transwoman robin.
"Who's that beautiful woman? Ow!" Franky yelled from the Sunny. Robin smiled upon seeing him, his appearance being more... robotic than it had when she last saw him, with enormous red arms and braces on his legs. She secretly hoped he'd comment on her own new appearance.
"Franky!" she called back. "It's wonderful to see you again."
"Robin, you look different! Is your hair longer?" he asked as he leapt down to talk to her face-to-face.
It occurred to Robin that of course he'd noticed, but he wasn't really letting anything on. A little frustrating, maybe, but nothing she won't get over within two minutes.
"Yes, I decided to grow it out. I think it suits me." Franky laughed.
"It does! We should be interesting hair style twins, Robin!"
Robin blinked. "Interesting hair style?" She looked at his buzzcut. Franky looked at where her eyes were trained and a grin slowly spread across his face.
"Press my nose for three seconds," he instructed, leaning down slightly so she could reach. She did so, tentatively, and when her finger left the metal nose, a mane shaped like a woman popped up.
"Ow!" he said. "Congratulations on your transition!"
Robin beamed.