Short question.

[Daemon]

Alright, I don't want to accidently name a custom digimon something that's already been used in the series. I'm 98% sure that none of these exist in the first three seasons, but as I haven't seen any of the fourth, I'd like some confirmation;

Yumemon (Dreamon/Dreammon?)
Spearmon
Mamorumon (Defendmon/Defensemon?)
Vendettamon/Revengemon

Those names or anything close to them... I appreciate your help.