Chumblr-tan is the child of 4chan and tumbler. She born under the sign of 3 4's (rule34) between 4chan and tumblr. Chumblr-tan originally posted on /b/ stating she was lost and also getting trips (444). She said "Mommy has blue hair with a T in her hair. Daddy is green and has no face." She is also known as Cancer-tan. As she is the offspring of the two sites 4chan and tumblr, she is therefore cancer incarnate. beloved by Anon and Tumbler alike, the two parents protect her from pedobears lustful advances.