The best replacement for krillin is tien.

The best alternatives to krillin are rated as following:
★★★★★  tien
★★★★  yamcha
★★  piccolo
★  bacterian
★  nappa
★  raditz
  kid gohan
  pintar
  android 18
  kuririn
  bulma

Your alternative for krillin is not listed? Suggest!
Speaking about krillin, one probably shouldn't forget about android 18.

Other search terms related to krillin and their ratings are:
★★★★★ android 18
You have in mind a companion for krillin and it is not yet here? Propose!



Google Trends

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krillin
tien
yamcha