Susie seemed to come and go at will, while Itsy was always with my daughter. He was the nice imaginary friend. Susie was a brat.
Dick and Ditto were always together. Our son tells us now (he's 24) that they were bad! (btw, my son is STILL wierd!!)
LOL....that brings back memories...
when she was about 2, my daughter had an imaginary friend..."Marilyn". Those two never got along....fought constantly....Marilyn was a thoroughly unpleasant child. I told my husband I'll be she's got a parole officer somewhere wondering where she is.