There are some verbs in Spanish that have two participles. The regular one (ending in -ado or -ido) forms los tiempos compuestos and the irregular one is often used as an adjective or an adverb. Let’s check out the most common ones:

absorber (to absorb) – absorbido – absorto
abstraer (to abstract) – abstraído – abstracto
atender (to pay attention, to meet) – atendido – atento
bendecir (to bless) – bendecido – bendito
confundir (to confuse) – confundido – confuso
convencer (to convince) – convencido – convicto
confesar (to confess) – confesado – confeso
corromper (to corrupt) – corrompido – corrupto
corregir (to correct) – corregido – correcto
despertar (to awaken) – despertado – despierto
difundir (to diffuse) – difundido – difuso
elegir (to elect) – elegido – electo
eximir (to exempt) – eximido – exento
expresar (to express) – expresado – expreso
extender (to extend) – extendido – extenso
extinguir (to extinguish) – entinguido – extinto
fijar (to fix) – fijado – fijo
freír (to fry) – freído – frito
hartar (to annoy, to satiate) – hartado – harto
imprimir (to print) – imprimido – impreso
insertar (to insert) – insertado – inserto
invertir (to invest) – invertido – inverso
juntar (to join) – juntado – junto
maldecir (to curse) – maldecido – maldito
manifestar (to manifest) – manifestado – manifesto
nacer (to be born) – nacido – nato
oprimir (to opress) – oprimido – opreso
presumir (to suppose) – presumido – presunto
prender (to light) – prendido – preso
proveer (to provide) – proveído – provisto
recluir (to reclude) – recluído – recluso
salvar (to save) – salvado – salvo
sepultar (to bury) – sepultado – sepulto
soltar (to release) – soltado – suelto
sujetar (to hold) – sujetado – sujeto
suspender (to suspend) – suspendido – suspenso
teñir (to dye) – teñido – tinto
torcer (to twist, to wring) – torcido – tuerto

¡Nos vemos prontito!