Bertram "Bliter" McKenzie is a boy from Glasgow who likes aeroplanes. His sister, Brianna, lives with him and his mother. Their (unseen) dad might make an appearance later in the series.
Bertram has a Babble uPad, as seen in the episode The uPad.
- He, Brianna, Phil and Lil, and Zahgsoja are probably the biggest-roled humans in the series.
- In Mac+Cool's fanon, he was bitten by Nick Gazelle's emo great-grandson.
- He has no Tapple MePads.