Saiyan (サイヤ人 /
saiya-jin) = "saiya" an anagram of 野菜 /
yasai (Japanese for "vegetable")
Vegeta (ベジータ /
bejiita) = play on ベジタブル /
bejitaburu ("vegetable")
Kakarrot (カカロット /
kakarotto) = play on キャロット /
kyarotto
Raditz (ラディッツ /
radittsu) = play on ラディッシュ /
radisshu ("radish")
Nappa (ナッパ /
nappa) = play on 菜っ葉 /
nappa (
napa; a type of Chinese cabbage)
Bardock (バーダック /
baadakku) = exact Japanese spelling for
burdock
Selypa (セリパ /
seripa) = anagram of パセリ /
paseri ("parsley")
Toma (トーマ /
tooma) = from and play on トマト /
tomato
Toteppo (トテッポ /
toteppo) = anagram and play on ポテト /
poteto ("potato")
Panbukin (パンブーキン /
panbuukin) = play on パンプキン /
panpukin ("pumpkin")
Tullece (ターレス /
taaresu) = anagram and play on レタス /
retasu ("lettuce")
Broli (ブロリー /
burorii) = from and play on ブロッコリー /
burokkori ("broccoli")
Paragas (パラガス /
paragasu) = from and play on アスパラガス /
asuparagasu ("asparagus")
Tarble (ターブル /
taaburu) = play on ベジタブル /
bejitaburu ("vegetable")
Saiyans are all vegetable puns. The Tsufruians, the inhabitants of the planet they originally shared, are a pun on "fruit" (フルーツ /
furuutsu).
All of these things, including the Ginyu Special Force (whose names are all dairy puns), are all things that go in the freezer.
Thus, Freeza.
How deep do you want to go, here? ^_~