The former Nickelodeon teen star remembers Amanda Bynes fondly as his “little sister” and wants her to return for an All That reboot.

Speaking to Entertainment Tonight, The Good Burger star had nothing but glowing words for Bynes saying:

“I love Amanda, she’s like [my] little sister. She’s so fearless.

The comedian also recalled teaching the actress a few tips and tricks here and there.

“I remember her being on set, she told me, ‘Hey Kel, I wanna do the physical comedy that you do.’ So I used to show her little tricks to do that would make her comedy just awesome.”

“She did everything so great, so awesome, she was super fearless,” he added.

Bynes is currently in rehab while she recovers from mental health issues and drug addiction. On her journey to recover, the star is committed to her health and recently reached the milestone of graduating from the Fashion Institute of Design & Merchandising in California.

“She always had style, so going to fashion school was definitely what was up,” Mitchell said about his former co-stars latest endeavor.

When asked if there was a possibility for Bynes to make a cameo on the highly-anticipated All That reboot, Mitchell was really happy about the concept.

“That would be crazy! We really want her to do a cameo in All That. We’ve been talking about that,” he revealed.

As for Mitchell’s message to Bynes he says, “So, Amanda, come on, girl! Call ya brother up!”

Fans and 90s kids can catch Mitchell and get their fix of nostalgia at The Good Burger pop-up restaurant in West Hollywood.

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