Vampire Cross sans

He's an aggressive introvert and has shown to be hostile, with outwardly selfish behaviors from time to time. He also shows no concern for those that aren't close to him, as he had no problem harming other people to reach his goal. Cross would resort to violence even to the slightest problem, seeing as he punched Dream despite only being offered help because of the guardian's interference in his business.

Despite his cold self on the outside to strangers, Cross has a soft spot for those who he cares on the inside, since he fell into some state of grief for losing his home and family after obliterating them, and resorted to hunt other universes to "bring them back." Another main trait of Cross's is his lack of trust in others, likely caused because of the countless wrong people he put his faith in. However, even with his attitude, Cross never showed any sort of malicious intent like Nightmare or Error, only longing to fix his universe and desperately trying to reverse his mistakes.

A majority of his traits likely developed due to XGaster's careless behavior with Cross and XPapyrus when they were younger. They were shown little to no attention by their father, and Cross seemed to be the most cautious of him out of the brothers, trying to be as obedient as possible.After the events of Timeline X, Ink was Cross's only friend around that time, not knowing about Ink's true intention with the "game". Cross would often be visited by him to have company due to his loneliness in the void. They are seen as good friends, however due to Ink's soulless nature would have most likely gotten in a lot of fights. While not much is shown with these 2, Ink showed concerns and care for Cross, however during the events of the XEvent he was rather a bit mad with Cross for disrupting stories around the multiverse. Despite this, Cross doesn't seem to either like or hate Ink after and during the XEvent; he was greatly upset with Ink for not helping him, but at the beginning of the series he contradicted withXChara on their doings before starting and even mentioned Ink only wished to help them

Some Xtra because he's an Vampire in the story:

His Name is Cross sans but Call him Cross. He's Around 6'0 foot tall and has a Muscular body.He loves chocolate, of course.but He's often and Drink Bloods because of his Habits, he's kinda manipulative and Selfish Vampire.but He actually can be a bit soft and shy when people compliment him or even get flustered.he has This suggestive and Flirty personality when he manipulated to drink his Victim Blood, but he's actually a bit nice.