Whether or not Boris predates NAR Avenger creation, he certainly should be here. And wasn’t there a couple, called something like Captain Camp and Mother Russia?
The pizza company that helped that poor woman who got kicked out of the house (either pregnant or with a small child) is another one.
And I remember nominating that small child (and the OP) who saved her mother’s life because they managed to climb out of their high chair and go next door to alert OP; the mother had fallen over and was unconscious.
Edited: found CC and MR
Edited to further add the awesome pizza avengers (misremembered some details). I had nominated them as the NARA Caterers
And now I’ve found the Toddler story. The child and the OP are definitely heroes!