Well this is new

Dianna?

"Alright. So guys...I feel like Thomas is missing a personality aspect." Virgil said as gloomy as he always is.
"No! W-we're a-all He n-eeds...right Logan?" Roman stuttered.

Logan gave the dad look to Roman. But that's Patton's thing right? 'Hanging with Patton too much I suspect' 
"Why of course! We need someone for him Roman! I have Logan. You have? Well your prince in your room. But Virgil has nobody." Patton said standing up for a slightly anxious Anxiety.

Just then an unknown side popped in.
"FEAR NOT MY FRIENDS! FOR THE PRINCE IS SAVING YOU FROM..." Roman started.
"Her?" Logan asked confused.
"Ha! Logic's confuses everyone!" She laughed.
"You're an emo goddess!" Roman gasped lost for words.
"Don't care. Name's Dianna ya know...I don't like discussing my job." She said sadly.
"It's okay...I didn't like mine." Virgil said so suddenly she jumped out of her skin.
"You? You're Anxiety huh? Cool dude. I'm..." Dianna started, "I am Thomas's depression..."