Need to cheer myself up thanks to my very own evil step mother, so i'm gonna list Ultraman kaiju with reusages.

Gaps in the number sequences represent episodes without notable reuses. Letters represent secondary kaiju with reuses.

#1 Bemular - Godzilla roar high pitched
#2 Alien Baltan - modified Cicada man head with Matango laugh
#3 Neronga - modified Baragon suit with Varan roar
#4 giant Ragon - altered Ultra Q Ragon suit with Varan/Godzilla roar
#6 Gesura - modified Peter suit with Ragon's fins
#7 Antlar - Rodan roar high pitched
#8 Red King - Gaira roar + Godzilla roar, King Kong roar + Godzilla roar when in pain.
#8b Chandora - modified Peguila suit with Varan/King Kong roar.
#8c Magular - modified Neronga suit (Baragon with Neronga head) with Varan roar high pitched.
#8d Pigmon - Garamon suit with giant lizard (from King Kong vs Godzilla) noises.
#9 Gabora - modified Neronga suit with King Kong roar.
#10 Jirass - two modified Godzilla suits combined with Godzilla roar high pitched.
#11 Gyango - modified Bemular suit with altered Gamera roars
#12 Dodongo - Mothra's chirps
#13 Pestar - altered Mothra chirps
#16 Alien Baltan 2 - Matango laugh
#18 Alien Zarab - modified Ragon suit
#19 Aboras - modified Red King suit with Varan roar
#19b Banila - Anguirus roar high pithched
#22 Telesdon - Gyango roar
#24 Gubira - altered Barugon roar (that's the Dalei kaiju not Toho's Baragon)
#25 Red King 2 - modified Aboras suit, same roar combinations as first Red King
#25b Dorako - Ebriah roar
#25c Gigass - modified Hydra suit with King Kong roar
#26 & 27 Gomora - altered Gaira roar
#30 Woo - altered King Kong roar
#32 Zambolar - modified Gavadon B suit with combo of Godzilla, Gamera and King Kong roars
#33b Alien Baltan 3 - repainted Baltan 2 suit with Matango laugh
#33c Alien Zarab 2 - repainted Zarab suit
#33d Kemurian 2 - reused Kemurian head
#34 Skydon - modified Gamakujira suit with altered King Kong roar + Zambolar roar
#35b Garamon ghost - Pigmon/Garamon suit
#35c Telesdon ghost - Telesdon suit
#36 Zaragas - modified Gomora suit with Woo roar
#37 Geronimon - altered Mongular roar
#37b Re-Telesdon - Telesdon suit
#37c Re-Dorako - modified Dorako suit + Imola's horns with Ebriah roar
#37d Re-Pigmon - modified Pigmon/Garamon suit
#39 Zetton - Kemurian breathing sound + altered King Ghidorah roar
#39b Alien Z-Ton - Kemurian suit with Kemurian breathing sounds