surprise, the sixties are here early 61 (f): She teaches centered square numbers. 62 (m): He's 26's friend, and while 26 just like one set of the alphabet (according to my headcanon), 62 likes capital letters, lowercase letters, and numerals, as there are 62 of those total. 63 (f): She is a biker, simply to be similar to some other multiples of 7, like 14, 35, 56, etc. 64 (m): A square, and a cube! 65 (f): She used to be an agent like 26, but has retired and now lives alone with her 65 cats. 66 (f): A football announcer. She can also make a football team of 1-11. 67 (f): She likes to have two thirds of everything, but often needs to be reminded she's not EXACTLY two thirds of 100. 68 (f): She isn't nearly as good at art as 17 (in fact her art is really bad), but she's completely oblivious about it. Criticize her work, she'll tell you you just don't understand true art. 69 (m): A comedian.
(C) Numberblocks @AuryTube06 for the sprites.