A halin yanzu, Joaquin Phoenix yana daya daga cikin mafi kyawun 'yan wasan duniya, amma ban da ƙwararrun ƙwarewar sa, an san shi da wuya halinsa da kuma irin tsarin aiki. A cikin wani hirar babban aiki tare da Mikini na GQ, Phoenix ya ce yayin fim din "Joker" ya samu damar sake samun wani babban dan wasan kwaikwayo wanda Robert de Niro ya wakilta. Dalilin rikici shine rashin yarda da Phoenix halartar karatun rubutun. Bai so shi ba. De Niro, wanda ya juya zuwa Daraktan Todd Phillips tare da irin waɗannan kalmomin:
Faɗa masa [Phoenix] cewa shi dan wasan kwaikwayo ne kuma yana buƙatar jin fim ɗin gaba ɗaya, don haka duk zamu iya yin ɗalibin gaba ɗaya, don haka duk zamu karanta rubutun.
Phoenix ya amsa wannan:
Tsine wa biyu, ba zan shiga cikin tweet ba.
Kamar yadda kake gani, mai goyan bayan tsarin gargajiya na de Niro bai yi aiki da wani Phoenix na farko ba, amma a sakamakon haka, 'yan wasan har yanzu sun yi sulhu. Phoenix ya ce ya yarda ya rike da tweet a ofishin De niro. Gaskiya ne, yayin taron, Phoenix har yanzu jin ba a cikin farantinsa ba, bai faɗi cewa, amma mumbles ya zamewa kayan sa. Bayan haka, De Niro ya gayyaci Phoenix zuwa wani tattaunawar ta sirri, amma ya ki. A lokaci guda, Phoenix ya lura cewa babban dan wasan nasa ne tun lokacin da ya yi tauraruwa a cikin "Martin mai jin daɗi.
Matsayin taken a "Joker" ya kawo taro na lambobin yabo daban-daban, ciki har da Oscar a cikin nadin na "mafi kyawun namiji." Tare da De Niro, an bashi wannan kyautar Pright Lividalious sau biyu - don jagorar dagiya a cikin "Baharfafa Basha 2" (1975).