Perfect Peter's Pen Pal is the sixth episode of Series 2.
Perfect Peter's perfect pen pal Super Sammy comes to stay, but is he really Super, or just downright Slimy?
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- Henry is seen holding a toy of Roly Mo from The Fimbles and its spin-off, The Roly Mo Show. Roly Mo appears again in the form of a snowglobe in Horrid Henry Says Goodbye. He is also mentioned in Horrid Henry Goes to the Movies, where Prissy Polly says "Hold on a Roly Mo." Roly Mo can appear as he, along with the two shows he appears in, were produced by Novel Entertainment, which also produces the Horrid Henry TV series.
- Sammy complains that Henry is blocking the TV, even though it isn't on.