Born and raised in Nairobi Kenya, Dennis grew up engaging in acting and dance sharpening his skill of self expression. Prior to attending the American Academy of Dramatic Arts and living in Los Angeles, Dennis had completed his college studies in the United Kingdom where he interacted with persons of different nationalities and diverse cultures-a period when he continued to perform and attend screen acting classes.

Since then, Dennis has been involved in various projects including Amazon Prime TV movie Blue Light Melody as well as award winning and nominated short films The Spell That Backfired, RAW and PREY.