Voice Description*: Compared OG sans, Cross is a lot more serious, his attitude can be best described as "edgy." His voice sounds a lot more mature, being in the low-mid range and with a more clear tone compared to the usual, thicker sounding  sans voice.

Various interpretations of his voice can be found through fandubs on YouTube, I highly suggest using them as reference!

*Note: Like all voiceless characters, this is up to interpretation. If you have your own interpretation of this character's voice, by all means try it!

Personality from UT Fanon AU Wiki

Personality:

Although he had a lot of similarities with Underswap Sans during XTale, Cross throughout Underverse became more like his polar opposite. He's an aggressive, introvert and hostile, with selfish behaviors from time to time, being who also shows howsoever 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 twice 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 grief for losing his home and family after obliterating them, and resorted to hunt other universes to blindly "bring them back". His main trait that also represents XGaster is his lack of trust in others because of the countless wrong people he put his faith on. However, even with his attitude, Cross never showed any sort of malicious intent like Nightmare or Error, only longing for his universe and desperately trying to fix his mistake.